"Pseudo-MPEC" for 6R10DB9
Created Sun Jun 24 12:31:48 2007 using Find_Orb
Updated 16, 19, 24 June 2007: more observations
Updated 8 June 2007 with more links and orbital elements at various epochs
Some more sites with info about this object
Important note: This is not the same object as 6Q0B44E. The latter is almost certainly a piece of space junk, found at roughly the same time as 6R10DB9.
You can get ephemerides for this object from the Minor Planet Center's Distant Artificial Satellites Observation Page or from JPL's Horizons system, customized for your observing location and desired time span. (In both ephemeris systems, this object is called an "artificial satellite". For reasons I'll discuss below, we're all increasingly confident that it's actually a rock.)
More info on this object (elements for different epochs, etc.) can be found on DASO Circular 68, 69, 70, 71, 72, 73, 75, 76, 77, 92, 93, 95, 97, 106, 107, 108, and 109.
I ran some Monte Carlo variant orbits on this object. All show that the object is newly arrived to the Earth-Moon system, explaining why we've not spotted it before. It had perigees of about 839000 km on 11 September 2006, and will have perigees at about 533000 km on 4 January 2007; 354000 km on 25 March 2007; and 275000 km on 14 June 2007. Then it will leave the Earth-Moon system again.
Propagation backward in time shows that this object passed us in December 1992, on the side toward the Sun, at a distance of about .08 AU. Before that, its previous closest approach would have been to .069 AU in February 1969. Prior to the 12 December observations, it seemed plausible (though not too likely) that the object might be a piece of Apollo hardware. Projecting the orbit past that got a close pass by the earth in the late 50s. Now, with the 12 December data, I can say that the object passed within .09 +/- .01 AU in early October 1958. (This should be determined to still better accuracy with the March 2007 data.)
I'd assumed this was a rocket booster, but the 12 December 2006 observations from (G96) Mt. Lemmon made this harder to believe. They allowed the area/mass ratio to be computed to within about 50%. The March 2007 data from (A60), (G96), and (J95) have narrowed that down to about 5%, and the area/mass ratio is way too low to be a rocket booster. If the object is two or three meters across, it would have a mass of a few tons, about what a low-density rock might have. I hate to say this, because it seems so implausible... but this looks a heck of a lot like a natural object.
Peter Birtwhistle got four more observations of this object on 15 June and more on 18/19 June which have a substantial effect on the orbit. In particular, the area/mass ratio has increased from 0.00082 m2/kg to .0011. Further data from G96 confirms this. In truth, utter stability in the AMR would be a bit surprising, since it would indicate a spherical object. If it's at all potato-shaped, the AMR would be greatest when the spin axis was pointed closest to the sun, and would show considerable variation. It could be that the radar data will support that idea.
The variations in area/mass also make it harder to fit the orbit, and the root-mean-square error has climbed quite a bit with the latest observations included. We've seen similar effects with various artificial objects such as J002E3, the Apollo rocket stage found a few years ago.
Is it a 'second moon'?: I suppose it depends on what you consider to be a 'moon'. I'd call it a chunk of rock that orbits the sun almost all the time, spending only a few months orbiting us just now. Calling it a 'moon' really seems like a stretch to me.
However, it quite likely got where it is as a result of being blasted off the surface of the moon by an impact. (It would be difficult for a "normal" asteroid to get into this orbit, because it's moving slowly relative to the earth and moon. The asteroid would somehow have to lose a lot of energy as it went past us, and this does not normally happen; the object approaches us with a certain energy, and doesn't lose any as it goes by. So it's probably a piece of the moon.)
Is it an impact hazard? I mention this one because a few folks on the Web have assumed that it is. It will make passes by us in 2028 and 2044 (at safe distances), and every twenty years or so after that. Eventually, it'll get caught in the earth/moon system for a few orbits again, and will almost certainly be ejected again, just as happened this time. Eventually, its luck will run out and one of those "orbits" will end up hitting the earth or moon.
But I'd not worry about it. This object is only a few meters across. It would be one heck of a bright meteor if you were close enough to where it hit, and maybe some of it would survive to hit the ground. Maybe there would even be a big enough chunk to knock a big hole in a house underneath it. That's about the extent of the damage that might occur.
A few pages with other info about this object:
Peter Birtwhistle's page about 6R10DB9 has comments on its discovery and some images and details on its orbit.
Sky & Telescope has an article about this object, including a nice diagram of its path.
It looks as if the folks at JPL hope to get radar data for this object in mid-June. Click here for details, including some info about rotation period and other data on the object.
Astrometry
Observing stations
Orbital elements
Residuals
Ephemeris
Astrometry:
6R10DB9 C2006 09 14.27062 23 11 31.09 -07 31 12.5 19.3 V D0068703
6R10DB9 C2006 09 14.27704 23 11 33.36 -07 32 30.6 18.9 V D0068703
6R10DB9 C2006 09 14.28346 23 11 35.62 -07 33 46.7 19.2 V D0068703
6R10DB9 C2006 09 14.28988 23 11 38.04 -07 35 02.3 19.0 V D0068703
6R10DB9 C2006 09 14.31531 23 11 46.80 -07 39 57.3 19.8 V D0068703
6R10DB9 C2006 09 14.32244 23 11 49.38 -07 41 20.4 19.5 V D0068703
6R10DB9 C2006 09 14.32957 23 11 51.97 -07 42 42.3 19.5 V D0068703
6R10DB9 C2006 09 14.57244 23 15 51.66 -08 03 15.8 19.4 R D0068E12
6R10DB9 C2006 09 14.57480 23 15 52.42 -08 03 42.6 19.9 R D0068E12
6R10DB9 C2006 09 15.30082 23 26 45.63 -10 49 35.7 19.1 R D0068854
6R10DB9 C2006 09 15.30551 23 26 47.15 -10 50 28.7 19.5 R D0068854
6R10DB9 C2006 09 15.31020 23 26 48.83 -10 51 20.9 19.1 R D0068854
6R10DB9 C2006 09 16.30496 23 41 43.40 -13 55 26.5 19.0 V D0068703
6R10DB9 C2006 09 16.30565 23 41 43.69 -13 55 34.4 19.4 V D0068703
6R10DB9 C2006 09 16.30635 23 41 43.94 -13 55 41.2 19.1 V D0068703
6R10DB9 C2006 09 16.30705 23 41 44.19 -13 55 48.5 19.7 V D0068703
6R10DB9 C2006 09 16.60865 23 46 00.19 -14 24 22.2 19.3 V D0068E12
6R10DB9 C2006 09 16.60919 23 46 00.30 -14 24 27.2 18.9 V D0068E12
6R10DB9 C2006 09 16.60971 23 46 00.51 -14 24 32.7 20.0 V D0068E12
6R10DB9 C2006 09 16.61026 23 46 00.73 -14 24 38.7 19.6 V D0068E12
6R10DB9 C2006 09 16.61079 23 46 00.91 -14 24 44.4 19.0 V D0068E12
6R10DB9 C2006 09 16.61273 23 46 01.48 -14 25 04.1 20.0 V D0068E12
6R10DB9 C2006 09 16.61326 23 46 01.70 -14 25 11.1 19.4 V D0068E12
6R10DB9 C2006 09 16.61383 23 46 01.88 -14 25 15.9 19.7 V D0068E12
6R10DB9 C2006 09 16.61436 23 46 02.06 -14 25 21.6 19.4 V D0068E12
6R10DB9 C2006 09 16.61490 23 46 02.28 -14 25 27.9 19.5 V D0068E12
6R10DB9 C2006 09 17.30311 23 56 31.55 -16 51 01.6 19.3 V D0068703
6R10DB9 C2006 09 17.30529 23 56 32.28 -16 51 23.5 19.3 V D0068703
6R10DB9 C2006 09 17.30744 23 56 33.02 -16 51 45.3 19.8 V D0068703
6R10DB9 C2006 09 18.60321 00 15 21.53 -20 00 10.3 19.5 R D0069E12
6R10DB9 C2006 09 18.60567 00 15 22.33 -20 00 33.8 19.4 R D0069E12
6R10DB9 C2006 09 18.70586 00 15 57.74 -20 14 51.1 19.5 R D0069E12
6R10DB9 C2006 09 18.70808 00 15 58.68 -20 15 08.8 19.2 R D0069E12
6R10DB9 C2006 09 21.67191 00 58 22.27 -27 05 33.6 D0070E12
6R10DB9 C2006 09 21.67456 00 58 23.12 -27 05 49.6 D0070E12
6R10DB9 C2006 09 22.36078 01 08 09.32 -28 45 54.6 D0072693
6R10DB9 C2006 09 22.36141 01 08 09.45 -28 45 59.4 D0072693
6R10DB9 C2006 09 22.36271 01 08 09.79 -28 46 06.3 19.5 R D0072693
6R10DB9 C2006 09 23.62814 01 25 21.23 -30 37 06.3 20.1 R D0071E12
6R10DB9 C2006 09 23.63784 01 25 23.76 -30 38 04.0 20.2 R D0071E12
6R10DB9 C2006 09 25.77831 01 51 59.25 -33 35 42.1 20.6 R D0073E12
6R10DB9 C2006 09 26.67365 02 03 54.67 -34 39 50.1 20.7 R D0073E12
6R10DB9 C2006 09 26.68074 02 03 56.19 -34 40 14.6 20.5 R D0073E12
6R10DB9 C2006 09 28.67809 02 27 40.30 -36 30 15.9 20.3 R D0075E12
6R10DB9 C2006 09 28.68776 02 27 42.12 -36 30 39.3 20.4 R D0075E12
6R10DB9 tC2006 12 11.29404 06 59 16.86 +08 10 53.5 20.6 V D0076291
6R10DB9 tC2006 12 11.29941 06 59 15.06 +08 11 39.6 20.9 V D0076291
6R10DB9 tC2006 12 11.30494 06 59 13.10 +08 12 29.0 20.4 V D0076291
6R10DB9 C2006 12 12.37118 06 59 10.84 +10 47 18.6 D0076G96
6R10DB9 C2006 12 12.38374 06 59 05.41 +10 49 11.5 D0076G96
6R10DB9 C2006 12 12.39691 06 58 59.88 +10 51 06.6 D0076G96
6R10DB9 C2006 12 12.41300 06 58 53.09 +10 53 28.4 D0076G96
6R10DB9 tC2006 12 13.32455 06 59 51.70 +13 14 40.4 20.3 V D0076291
6R10DB9 tC2006 12 13.33029 06 59 49.26 +13 15 38.2 20.6 V D0076291
6R10DB9 tC2006 12 13.33599 06 59 46.78 +13 16 33.0 D0076291
6R10DB9 C2006 12 16.34250 07 00 04.72 +22 06 41.1 20.0 V D0077G96
6R10DB9 C2006 12 16.34640 07 00 02.61 +22 07 27.9 19.7 V D0077G96
6R10DB9 C2006 12 16.35633 06 59 57.25 +22 09 26.2 19.9 V D0077G96
6R10DB9 C2006 12 16.35663 06 59 57.09 +22 09 29.5 19.4 V D0077G96
6R10DB9 C2006 12 16.35696 06 59 56.87 +22 09 33.9 20.0 V D0077G96
6R10DB9 C2006 12 17.28409 07 00 29.51 +25 15 15.3 19.9 V D0077G96
6R10DB9 C2006 12 17.28772 07 00 27.66 +25 16 05.7 19.8 V D0077G96
6R10DB9 C2007 03 11.86164806 44 03.457-29 38 19.03 19.7 V D0092B31
6R10DB9 C2007 03 11.86251406 44 03.077-29 38 07.30 19.3 V D0092B31
6R10DB9 C2007 03 11.86280106 44 02.933-29 38 03.09 19.6 V D0092B31
6R10DB9 C2007 03 11.86308706 44 02.823-29 37 59.40 19.5 V D0092B31
6R10DB9 C2007 03 11.86379906 44 02.507-29 37 49.51 19.0 V D0092B31
6R10DB9 C2007 03 11.86494706 44 02.009-29 37 33.79 19.6 V D0092B31
6R10DB9 C2007 03 11.86662206 44 01.204-29 37 10.43 19.9 V D0092B31
6R10DB9 C2007 03 11.86804906 44 00.631-29 36 50.75 19.9 V D0092B31
6R10DB9 C2007 03 11.86972706 43 59.939-29 36 27.48 19.7 V D0092B31
6R10DB9 C2007 03 11.87115406 43 59.315-29 36 07.79 20.1 V D0092B31
6R10DB9 C2007 03 15.12299 06 47 23.35 -18 05 46.2 D0093G96
6R10DB9 C2007 03 15.12475 06 47 22.26 -18 05 16.8 D0093G96
6R10DB9 C2007 03 15.12649 06 47 21.08 -18 04 48.7 D0093G96
6R10DB9 C2007 03 15.12913 06 47 19.60 -18 04 08.5 D0093G96
6R10DB9 C2007 03 15.83352406 47 14.292-14 17 18.59 20.0 V D0097B31
6R10DB9 C2007 03 15.84036106 47 10.728-14 15 10.56 19.9 V D0097B31
6R10DB9 C2007 03 15.84852906 47 06.636-14 12 36.84 D0097B31
6R10DB9 C2007 03 15.85445506 47 03.816-14 10 44.47 20.0 V D0097B31
6R10DB9 C2007 03 15.86131606 47 00.629-14 08 34.23 19.7 V D0097B31
6R10DB9 C2007 03 16.81518106 48 28.393-09 14 05.51 19.5 V D0097B31
6R10DB9 C2007 03 16.81871906 48 26.354-09 12 52.92 20.2 V D0097B31
6R10DB9 C2007 03 16.82198706 48 24.583-09 11 45.34 19.8 V D0097B31
6R10DB9 C2007 03 16.82525606 48 22.741-09 10 37.83 20.0 V D0097B31
6R10DB9 C2007 03 16.82779206 48 21.408-09 09 44.96 19.8 V D0097B31
6R10DB9 C2007 03 16.83031106 48 19.959-09 08 53.39 D0097B31
6R10DB9 C2007 03 16.83284606 48 18.597-09 08 00.96 19.6 V D0097B31
6R10DB9 C2007 03 16.83537206 48 17.249-09 07 08.30 19.9 V D0097B31
6R10DB9 C2007 03 16.83867006 48 15.490-09 05 59.57 20.2 V D0097B31
6R10DB9 C2007 03 16.84620906 48 11.611-09 03 22.05 19.7 V D0097B31
6R10DB9 C2007 03 16.84870506 48 10.373-09 02 30.26 19.6 V D0097B31
6R10DB9 C2007 03 16.85119106 48 09.084-09 01 39.30 19.7 V D0097B31
6R10DB9 C2007 03 16.85368206 48 07.932-09 00 46.13 19.9 V D0097B31
6R10DB9 C2007 03 17.79998106 49 55.890-03 25 22.33 19.5 V D0097B31
6R10DB9 C2007 03 17.80214706 49 54.510-03 24 32.09 19.8 V D0097B31
6R10DB9 C2007 03 17.80644706 49 51.814-03 22 53.47 19.7 V D0097B31
6R10DB9 C2007 03 17.80763406 49 51.073-03 22 26.34 19.7 V D0097B31
6R10DB9 C2007 03 17.80883806 49 50.333-03 21 58.01 19.7 V D0097B31
6R10DB9 C2007 03 17.81004406 49 49.593-03 21 30.66 20.0 V D0097B31
6R10DB9 C2007 03 17.81363706 49 47.448-03 20 07.40 19.8 V D0097B31
6R10DB9 C2007 03 17.82135906 49 42.909-03 17 08.33 19.3 V D0097B31
6R10DB9 C2007 03 17.82400706 49 41.393-03 16 07.06 19.8 V D0097B31
6R10DB9 C2007 03 18.80519006 51 30.381+03 27 31.86 19.9 V D0097B31
6R10DB9 C2007 03 18.80543106 51 30.217+03 27 39.19 19.8 V D0097B31
6R10DB9 C2007 03 18.80772706 51 28.733+03 28 39.60 19.6 V D0097B31
6R10DB9 C2007 03 20.95266 06 56 21.83 +21 30 51.7 18.7 R D0095J95
6R10DB9 C2007 03 20.95889 06 56 20.43 +21 34 27.9 19.2 R D0095J95
6R10DB9 C2007 03 20.96545 06 56 19.15 +21 38 16.0 18.7 R D0095J95
6R10DB9 C2007 03 20.97251 06 56 17.93 +21 42 20.8 19.0 R D0095J95
6R10DB9 C2007 03 20.97850 06 56 17.01 +21 45 47.6 19.2 R D0095J95
6R10DB9 C2007 03 20.98466 06 56 16.28 +21 49 20.2 19.3 R D0095J95
6R10DB9 C2007 06 15.95047420 20 10.06 +62 30 18.3 20.3 R D0106J95
6R10DB9 C2007 06 15.95565920 20 03.14 +62 24 28.6 19.7 R D0106J95
6R10DB9 C2007 06 15.95984520 19 57.22 +62 19 47.1 20.2 R D0106J95
6R10DB9 C2007 06 15.97969420 19 27.19 +61 57 21.2 19.0 R D0106J95
6R10DB9 C2007 06 18.95308 20 18 40.91 +16 57 22.9 19.0 R D0107J95
6R10DB9 C2007 06 18.95491 20 18 40.11 +16 56 23.4 19.0 R D0107J95
6R10DB9 C2007 06 18.95759 20 18 38.98 +16 54 54.4 19.1 R D0107J95
6R10DB9 C2007 06 18.95964 20 18 38.03 +16 53 46.5 19.2 R D0107J95
6R10DB9 C2007 06 18.96135 20 18 37.26 +16 52 49.5 18.9 R D0107J95
6R10DB9 C2007 06 18.99651 20 18 18.54 +16 33 23.2 18.7 R D0107J95
6R10DB9 C2007 06 18.99858 20 18 17.27 +16 32 14.3 18.6 R D0107J95
6R10DB9 C2007 06 19.00039 20 18 16.23 +16 31 14.3 18.6 R D0107J95
6R10DB9 C2007 06 19.00236 20 18 15.11 +16 30 07.9 18.7 R D0107J95
6R10DB9 C2007 06 20.97441 20 18 22.97 +00 50 00.1 19.7 R D0108J95
6R10DB9 C2007 06 20.98051 20 18 20.39 +00 47 40.6 19.3 R D0108J95
6R10DB9 C2007 06 20.98605 20 18 17.98 +00 45 32.6 19.7 R D0108J95
6R10DB9 C2007 06 21.02697 20 17 58.02 +00 29 52.4 19.1 R D0108J95
6R10DB9 C2007 06 22.31459 20 18 19.44 -06 42 29.3 19.2 V D0109G96
6R10DB9 C2007 06 22.32045 20 18 15.76 -06 44 21.1 19.1 V D0109G96
6R10DB9 C2007 06 22.32603 20 18 12.24 -06 46 06.6 19.3 V D0109G96
Station data:
(291) LPL/Spacewatch II (N31.9617 W111.5991). 1.8-m f/2.7 reflector.
(693) Catalina Station, Tucson (N32.4168 W110.7320). Observer C. W.
Hergenrother. 1.54-m reflector + CCD.
(703) Catalina Sky Survey (N32.4168 W110.7320). Observers R. A. Kowalski, E.
J. Christensen, A. R. Gibbs, A.Odell. Measurers E. C. Beshore, E. J.
Christensen, G. J. Garradd, A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M.
Larson, R. H. McNaught, A. R. Gibbs. 0.68-m Schmidt + CCD.
(854) Sabino Canyon Observatory, Tucson (N32.29987 W110.82005). Observer J.
E. McGaha. 0.36-m f/10.0 Schmidt-Cassegrain + CCD.
(B31) Southern African Large Telescope, Sutherland (S32.3756 E20.8108).
Observers T. Kwiatkowski, M. Polinska, A. Kryszczynska, D. Buckley, P.
Charles, E. R. Colmenero, Y. Hashimoto, A. Kniazev, N. Loaring, D.
O'Donoghue, M. Still, P. Vaisanen. Measurer P. Kankiewicz. 10-m SALT +
CCD.
(E12) Siding Spring Survey (S31.2735 E149.0642). Observers E. J.
Christensen, G. J. Garradd, D. M. Burton, R. H. McNaught. Measurers E. C.
Beshore, C. M. Casey, E. J. Christensen, G. J. Garradd, A. D. Grauer, R. E.
Hill, S. M. Larson, R. H. McNaught, A. R. Gibbs, R. A. Kowalski. 0.5-m
Uppsala Schmidt + CCD.
(G96) Mt. Lemmon Survey (N32.4425 W110.7917). Observers E. J. Christensen,
A. R. Gibbs. Measurers E. C. Beshore, E. J. Christensen, G. J. Garradd, A.
R. Gibbs, A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H.
McNaught, R. H. 1.5-m reflector + CCD.
(J95) Great Shefford (N51.4749 W1.4469). Observer P. Birtwhistle. 0.40-m
f/6.0 Schmidt-Cassegrain + CCD.
Orbital elements (near June perigee):
6R10DB9
Perigee 2007 Jun 14.235518 TT = 5:39:08 (JD 2454265.735518)
Epoch 2007 Jun 15.0 TT; AMR 0.0010917 m2/kg Find_Orb
M 2.55703 (2000.0) P Q
n 3.34479585 Peri. 73.22485 -0.16843854 0.53956627
a955778.142km Node 124.41750 -0.16573240 -0.84046785
e 0.7102740 Incl. 89.61502 0.97167958 -0.04981991
P 107.63d H 29.6 G 0.15 q 276913.749km Q 0.01092691
From 132 observations 2006 Sept. 14-2007 June 22; RMS error 2.484 arcseconds
Orbital elements (after leaving Earth/Moon system):
6R10DB9
Perihelion 2008 Dec 13.420123 TT = 10:04:58 (JD 2454813.920123)
Epoch 2008 Jun 15.0 TT; AMR 0.0010917 m^2/kg Find_Orb
M 189.67083 (2000.0) P Q
n 0.93886591 Peri. 10.24786 0.47903882 -0.87775639
a 1.03292074 Node 51.12997 0.80462255 0.43540304
e 0.0245195 Incl. 0.59561 0.35086228 0.19991970
P 1.05/383.43d H 29.6 G 0.15 q 1.00759403 Q 1.05824746
From 132 observations 2006 Sept. 14-2007 June 22; RMS error 2.484 arcseconds
Orbital elements (before entering Earth/Moon system):
6R10DB9
Perihelion 2005 Jan 17.264247 TT = 6:20:31 (JD 2453387.764247)
Epoch 2005 Jun 15.0 TT; AMR 0.0010788 m^2/kg Find_Orb
M 157.54270 (2000.0) P Q
n 1.05921205 Peri. 128.10268 0.17769126 -0.98405859
a 0.95311968 Node 311.66033 0.89976052 0.16549854
e 0.0505298 Incl. 0.56613 0.39856844 0.06510689
P 0.93/339.87d H 29.6 G 0.15 q 0.90495869 Q 1.00128068
From 132 observations 2006 Sept. 14-2007 June 22; RMS error 2.408 arcseconds
Residuals in arcseconds:
060914 703 .16+ .96+ 060928 E12 .70- 1.7+ 070316 B31 2.0- 1.6-
060914 703 .07- .93- 061211 291 .31- .21+ 070316 B31 2.4- 1.4-
060914 703 .23- 1.1- 061211 291 .70+ 1.3- 070316 B31 2.7- 1.1-
060914 703 2.1+ 1.1- 061211 291 .77+ .82- 070316 B31 2.6- 1.5-
060914 703 1.2- .65+ 061212 G96 .70+ .63- 070316 B31 3.6- 2.5-
060914 703 .85- .09- 061212 G96 .27- .42- 070316 B31 2.8- 1.6-
060914 703 .85- .00 061212 G96 .78+ 2.2- 070317 B31 1.0- .47-
060914 E12 .58+ .43- 061212 G96 .22+ 1.6- 070317 B31 1.5- .17-
060914 E12 .17- .32+ 061213 291 .11+ .20+ 070317 B31 2.2- .78-
060915 854 .94+ .09- 061213 291 .59+ .52+ 070317 B31 2.5- 1.1-
060915 854 .55- .03+ 061213 291 .64+ 1.5- 070317 B31 2.6- .54-
060915 854 .29+ .72+ 061216 G96 .89+ 1.2- 070317 B31 2.7- 1.1-
060916 703 1.0- .04- 061216 G96 .78+ 1.3- 070317 B31 2.5- .89-
060916 703 .21- .43- 061216 G96 1.1+ 1.4- 070317 B31 2.3- .65-
060916 703 .03- .39+ 061216 G96 1.1+ 1.6- 070317 B31 2.1- .78-
060916 703 .14+ .69+ 061216 G96 .53+ 1.1- 070318 B31 1.4- .62-
060916 E12 .61+ .14+ 061217 G96 1.1+ 1.3- 070318 B31 1.5- .36+
060916 E12 .43- .79+ 061217 G96 1.4+ 1.6- 070318 B31 1.7- .34+
060916 E12 .08+ .73+ 070311 B31 1.6- 2.1- 070320 J95 1.2- 4.6+
060916 E12 .59+ .49+ 070311 B31 1.6- 2.3- 070320 J95 .90- 4.2+
060916 E12 .62+ .32+ 070311 B31 1.8- 2.0- 070320 J95 .25- 4.7+
060916 E12 .59- .86+ 070311 B31 1.5- 2.3- 070320 J95 .21- 5.0+
060916 E12 .00 .61- 070311 B31 1.6- 2.2- 070320 J95 .95- 4.6+
060916 E12 .18- .52+ 070311 B31 1.5- 2.3- 070320 J95 1.0- 4.5+
060916 E12 .17- .33+ 070311 B31 2.5- 2.1- 070615 J95 2.1- 6.1+
060916 E12 .37+ .35- 070311 B31 1.9- 2.2- 070615 J95 2.0- 4.6+
060917 703 .39- .46- 070311 B31 1.5- 2.2- 070615 J95 2.7- 5.0+
060917 703 .39- .36+ 070311 B31 1.8- 2.4- 070615 J95 2.7- 5.5+
060917 703 .08- .91+ 070315 G96 2.0- 2.2- 070618 J95 3.2- .65-
060918 E12 .47- .72+ 070315 G96 2.2- .98- 070618 J95 3.1- .24+
060918 E12 .16- .43+ 070315 G96 3.8- .75- 070618 J95 2.1- .27-
060918 E12 .04- 1.1+ 070315 G96 1.8- 3.0- 070618 J95 2.3- .45-
060918 E12 .15- .63+ 070315 B31 2.0- 1.7- 070618 J95 1.9- .94-
060921 E12 1.1- .99+ 070315 B31 2.5- 1.8- 070618 J95 2.7- .23-
060921 E12 .68- 1.5+ 070315 B31 3.0- 2.0- 070618 J95 3.4- .09-
060922 693 .38+ 2.1+ 070315 B31 2.7- 1.8- 070619 J95 2.8- .32+
060922 693 .26- 1.4+ 070315 B31 3.1- 2.1- 070619 J95 1.8- .30-
060922 693 .64- 2.8+ 070316 B31 2.5- 1.6- 070620 J95 2.0- 1.1-
060923 E12 .77- 1.7+ 070316 B31 2.7- 1.7- 070620 J95 2.3- .07+
060923 E12 .63- 1.3+ 070316 B31 1.6- 1.5- 070620 J95 2.3- .30-
060925 E12 .46- 1.6+ 070316 B31 1.9- 1.5- 070621 J95 2.7- .21-
060926 E12 .81- 1.7+ 070316 B31 .98- 1.1- 070622 G96 1.8- .06-
060926 E12 1.1- 1.3+ 070316 B31 2.1- 1.7- 070622 G96 2.4- .36-
060928 E12 1.2- 1.3+ 070316 B31 2.0- 1.8- 070622 G96 2.1- .03+
Ephemerides:
Date (UT) RA Dec delta r elong mag '/hr PA
---- -- -- ------------ ------------ ------ ------ ----- --- ----- -----
2007 06 01 08 14 18.868 -58 01 32.94 890380 1.0141 92.1 21.6 6.55 1.4
2007 06 02 08 14 44.301 -55 16 30.51 848892 1.0141 90.0 21.5 7.23 1.1
2007 06 03 08 15 05.086 -52 13 16.30 805156 1.0140 87.7 21.5 8.07 0.8
2007 06 04 08 15 22.123 -48 47 24.40 759147 1.0139 85.1 21.5 9.13 0.7
2007 06 05 08 15 36.370 -44 53 02.69 710867 1.0139 82.0 21.5 10.46 0.5
2007 06 06 08 15 48.846 -40 22 14.21 660356 1.0138 78.5 21.5 12.18 0.4
2007 06 07 08 16 00.629 -35 03 56.42 607725 1.0137 74.4 21.5 14.45 0.4
2007 06 08 08 16 12.884 -28 42 23.69 553209 1.0136 69.5 21.6 17.51 0.4
2007 06 09 08 16 26.919 -20 54 30.88 497280 1.0136 63.7 21.8 21.72 0.4
2007 06 10 08 16 44.370 -11 05 51.49 440865 1.0136 56.8 22.0 27.69 0.4
2007 06 11 08 17 07.681 +01 34 35.92 385791 1.0136 49.1 22.4 36.18 0.5
2007 06 12 08 17 41.579 +18 16 21.62 335589 1.0138 41.9 22.9 47.82 0.5
2007 06 13 08 18 38.957 +40 05 32.17 296573 1.0140 40.5 22.9 61.22 0.6
2007 06 14 08 21 08.282 +66 37 32.55 277571 1.0145 51.2 21.5 69.86 1.0
2007 06 15 19 56 56.494 +85 41 55.09 284817 1.0151 70.2 20.1 66.29 174.8
2007 06 16 20 14 48.170 +61 31 19.67 315583 1.0158 89.3 19.4 54.00 179.2
2007 06 17 20 16 11.949 +42 32 30.33 361300 1.0165 104.9 19.1 41.27 179.5
2007 06 18 20 16 43.503 +28 06 09.84 414429 1.0173 116.7 19.1 31.45 179.6
2007 06 19 20 16 59.722 +16 59 49.39 470447 1.0179 125.6 19.1 24.48 179.7
2007 06 20 20 17 09.163 +08 14 27.55 527006 1.0185 132.5 19.1 19.57 179.8
2007 06 21 20 17 14.911 +01 09 16.04 582948 1.0191 137.9 19.2 16.04 179.8
2007 06 22 20 17 18.336 -04 43 02.97 637717 1.0196 142.1 19.3 13.44 179.9
2007 06 23 20 17 20.093 -09 40 54.88 691064 1.0201 145.5 19.4 11.47 179.9
2007 06 24 20 17 20.488 -13 57 02.73 742887 1.0206 148.2 19.4 9.94 180.0
2007 06 25 20 17 19.614 -17 40 27.03 793165 1.0210 150.4 19.5 8.72 180.1
2007 06 26 20 17 17.420 -20 57 40.56 841912 1.0215 152.1 19.6 7.74 180.2
2007 06 27 20 17 13.746 -23 53 35.62 889159 1.0218 153.5 19.7 6.94 180.3
2007 06 28 20 17 08.330 -26 31 54.47 934945 1.0222 154.5 19.8 6.27 180.5
2007 06 29 20 17 00.823 -28 55 29.36 979308 1.0225 155.3 19.8 5.71 180.8
2007 06 30 20 16 50.818 -31 06 35.90 .00683 1.0228 155.8 19.9 5.23 181.1
2007 07 01 20 16 37.861 -33 07 02.32 .00711 1.0231 156.2 20.0 4.82 181.5
2007 07 02 20 16 21.463 -34 58 15.93 .00738 1.0234 156.3 20.1 4.46 182.0
2007 07 03 20 16 01.089 -36 41 27.86 .00764 1.0237 156.3 20.1 4.15 182.6
2007 07 04 20 15 36.141 -38 17 36.32 .00790 1.0239 156.2 20.2 3.88 183.3
2007 07 05 20 15 05.995 -39 47 28.83 .00815 1.0241 156.0 20.3 3.63 184.1
2007 07 06 20 14 30.056 -41 11 43.81 .00839 1.0243 155.6 20.4 3.41 185.1
2007 07 07 20 13 47.839 -42 30 51.91 .00862 1.0245 155.2 20.4 3.22 186.2
2007 07 08 20 12 59.022 -43 45 17.20 .00885 1.0247 154.8 20.5 3.03 187.4
2007 07 09 20 12 03.504 -44 55 18.32 .00908 1.0249 154.3 20.6 2.86 188.7
2007 07 10 20 11 01.436 -46 01 09.49 .00930 1.0250 153.7 20.6 2.70 190.0
2007 07 11 20 09 53.233 -47 03 01.61 .00952 1.0252 153.1 20.7 2.55 191.4
2007 07 12 20 08 39.574 -48 01 03.27 .00974 1.0253 152.5 20.8 2.40 192.8
2007 07 13 20 07 21.365 -48 55 21.67 .00996 1.0254 151.8 20.9 2.25 194.1
2007 07 14 20 05 59.685 -49 46 03.48 0.0102 1.0255 151.2 20.9 2.11 195.3
2007 07 15 20 04 35.709 -50 33 15.48 0.0104 1.0256 150.5 21.0 1.98 196.5
2007 07 16 20 03 10.638 -51 17 04.90 0.0106 1.0257 149.8 21.0 1.84 197.5
2007 07 17 20 01 45.624 -51 57 39.66 0.0108 1.0257 149.1 21.1 1.71 198.5
2007 07 18 20 00 21.725 -52 35 08.30 0.0110 1.0258 148.5 21.2 1.59 199.3
2007 07 19 19 58 59.868 -53 09 39.81 0.0112 1.0258 147.8 21.2 1.47 200.0
2007 07 20 19 57 40.836 -53 41 23.50 0.0114 1.0259 147.1 21.3 1.35 200.6
2007 07 21 19 56 25.270 -54 10 28.74 0.0116 1.0259 146.4 21.3 1.24 201.2
2007 07 22 19 55 13.672 -54 37 04.82 0.0119 1.0259 145.8 21.4 1.14 201.6
2007 07 23 19 54 06.408 -55 01 20.84 0.0121 1.0259 145.1 21.5 1.04 201.9
2007 07 24 19 53 03.721 -55 23 25.62 0.0123 1.0259 144.4 21.5 0.95 202.1
2007 07 25 19 52 05.729 -55 43 27.60 0.0124 1.0259 143.8 21.6 0.86 202.3
2007 07 26 19 51 12.431 -56 01 34.83 0.0126 1.0259 143.2 21.6 0.78 202.5
2007 07 27 19 50 23.705 -56 17 54.89 0.0128 1.0258 142.6 21.7 0.70 202.6
2007 07 28 19 49 39.314 -56 32 34.77 0.0130 1.0258 141.9 21.7 0.63 202.8
2007 07 29 19 48 58.919 -56 45 40.80 0.0132 1.0257 141.3 21.8 0.56 203.1
2007 07 30 19 48 22.097 -56 57 18.47 0.0134 1.0257 140.7 21.8 0.50 203.7
2007 07 31 19 47 48.378 -57 07 32.31 0.0136 1.0256 140.2 21.8 0.44 204.6
2007 08 01 19 47 17.297 -57 16 25.74 0.0137 1.0255 139.6 21.9 0.38 206.1
2007 08 02 19 46 48.442 -57 24 01.03 0.0139 1.0255 139.0 21.9 0.33 208.3
2007 08 03 19 46 21.519 -57 30 19.36 0.0141 1.0254 138.4 22.0 0.28 211.6
2007 08 04 19 45 56.395 -57 35 20.96 0.0142 1.0253 137.9 22.0 0.23 216.4
2007 08 05 19 45 33.123 -57 39 05.32 0.0144 1.0252 137.3 22.1 0.18 223.8
2007 08 06 19 45 11.950 -57 41 31.56 0.0146 1.0251 136.8 22.1 0.13 236.2
2007 08 07 19 44 53.301 -57 42 38.63 0.0147 1.0249 136.2 22.1 0.10 258.7
2007 08 08 19 44 37.750 -57 42 25.68 0.0149 1.0248 135.7 22.2 0.08 295.7
2007 08 09 19 44 25.975 -57 40 52.24 0.0150 1.0247 135.2 22.2 0.11 330.0
2007 08 10 19 44 18.705 -57 37 58.41 0.0152 1.0246 134.6 22.2 0.15 349.9
2007 08 11 19 44 16.673 -57 33 44.94 0.0154 1.0244 134.1 22.3 0.20 1.4
2007 08 12 19 44 20.562 -57 28 13.30 0.0155 1.0243 133.7 22.3 0.26 8.8
2007 08 13 19 44 30.967 -57 21 25.57 0.0157 1.0241 133.2 22.4 0.32 14.2
2007 08 14 19 44 48.363 -57 13 24.40 0.0158 1.0240 132.7 22.4 0.38 18.3
2007 08 15 19 45 13.087 -57 04 12.84 0.0160 1.0238 132.3 22.4 0.44 21.7
2007 08 16 19 45 45.338 -56 53 54.19 0.0162 1.0236 131.9 22.4 0.50 24.4
2007 08 17 19 46 25.183 -56 42 31.89 0.0163 1.0235 131.5 22.5 0.55 26.8
2007 08 18 19 47 12.567 -56 30 09.34 0.0165 1.0233 131.1 22.5 0.61 28.8
2007 08 19 19 48 07.335 -56 16 49.89 0.0166 1.0231 130.7 22.5 0.67 30.5
2007 08 20 19 49 09.245 -56 02 36.74 0.0168 1.0229 130.3 22.6 0.72 31.9
2007 08 21 19 50 17.979 -55 47 32.92 0.0169 1.0227 129.9 22.6 0.77 33.2
2007 08 22 19 51 33.160 -55 31 41.29 0.0171 1.0226 129.6 22.6 0.82 34.3
2007 08 23 19 52 54.352 -55 15 04.52 0.0172 1.0224 129.3 22.7 0.87 35.2
2007 08 24 19 54 21.067 -54 57 45.10 0.0174 1.0222 128.9 22.7 0.91 36.0
2007 08 25 19 55 52.772 -54 39 45.27 0.0175 1.0220 128.6 22.7 0.95 36.6
2007 08 26 19 57 28.896 -54 21 07.01 0.0176 1.0217 128.3 22.7 0.99 37.0
2007 08 27 19 59 08.840 -54 01 51.94 0.0178 1.0215 128.0 22.8 1.02 37.4
2007 08 28 20 00 52.005 -53 42 01.20 0.0179 1.0213 127.7 22.8 1.06 37.6
2007 08 29 20 02 37.823 -53 21 35.40 0.0180 1.0211 127.4 22.8 1.09 37.6
2007 08 30 20 04 25.793 -53 00 34.51 0.0181 1.0209 127.1 22.8 1.12 37.6
2007 08 31 20 06 15.523 -52 38 57.90 0.0183 1.0207 126.9 22.8 1.15 37.4
2007 09 01 20 08 06.751 -52 16 44.42 0.0184 1.0204 126.6 22.9 1.18 37.2
2007 09 02 20 09 59.359 -51 53 52.53 0.0185 1.0202 126.3 22.9 1.21 37.0
2007 09 03 20 11 53.364 -51 30 20.55 0.0186 1.0200 126.0 22.9 1.24 36.8
2007 09 04 20 13 48.893 -51 06 06.80 0.0188 1.0197 125.8 22.9 1.28 36.6
2007 09 05 20 15 46.151 -50 41 09.78 0.0189 1.0195 125.5 23.0 1.31 36.5
2007 09 06 20 17 45.391 -50 15 28.29 0.0190 1.0193 125.3 23.0 1.35 36.4
2007 09 07 20 19 46.883 -49 49 01.47 0.0191 1.0190 125.0 23.0 1.39 36.4
2007 09 08 20 21 50.889 -49 21 48.85 0.0193 1.0188 124.8 23.0 1.43 36.5
2007 09 09 20 23 57.643 -48 53 50.31 0.0194 1.0186 124.6 23.0 1.47 36.6
2007 09 10 20 26 07.338 -48 25 06.11 0.0195 1.0183 124.3 23.1 1.51 36.8
2007 09 11 20 28 20.117 -47 55 36.83 0.0196 1.0181 124.1 23.1 1.56 37.0
2007 09 12 20 30 36.063 -47 25 23.30 0.0198 1.0178 123.9 23.1 1.60 37.3
2007 09 13 20 32 55.206 -46 54 26.60 0.0199 1.0176 123.7 23.1 1.64 37.5
2007 09 14 20 35 17.518 -46 22 47.96 0.0200 1.0173 123.6 23.1 1.69 37.8
2007 09 15 20 37 42.923 -45 50 28.76 0.0202 1.0171 123.4 23.1 1.73 38.1
2007 09 16 20 40 11.301 -45 17 30.45 0.0203 1.0169 123.2 23.2 1.77 38.4
2007 09 17 20 42 42.495 -44 43 54.52 0.0204 1.0166 123.1 23.2 1.81 38.6
2007 09 18 20 45 16.317 -44 09 42.55 0.0206 1.0164 123.0 23.2 1.85 38.9
2007 09 19 20 47 52.552 -43 34 56.10 0.0207 1.0161 122.8 23.2 1.88 39.1
2007 09 20 20 50 30.959 -42 59 36.82 0.0208 1.0159 122.7 23.2 1.92 39.3
2007 09 21 20 53 11.277 -42 23 46.34 0.0209 1.0156 122.6 23.2 1.95 39.5
2007 09 22 20 55 53.218 -41 47 26.37 0.0211 1.0154 122.5 23.3 1.98 39.7
2007 09 23 20 58 36.475 -41 10 38.62 0.0212 1.0151 122.4 23.3 2.01 39.8
2007 09 24 21 01 20.720 -40 33 24.76 0.0213 1.0149 122.3 23.3 2.03 39.9
2007 09 25 21 04 05.616 -39 55 46.38 0.0215 1.0147 122.2 23.3 2.06 39.9
2007 09 26 21 06 50.834 -39 17 44.86 0.0216 1.0144 122.1 23.3 2.08 39.9
2007 09 27 21 09 36.074 -38 39 21.31 0.0217 1.0142 122.0 23.3 2.09 39.9
2007 09 28 21 12 21.091 -38 00 36.41 0.0219 1.0139 121.9 23.4 2.11 39.8
2007 09 29 21 15 05.722 -37 21 30.47 0.0220 1.0137 121.8 23.4 2.13 39.8
2007 09 30 21 17 49.893 -36 42 03.39 0.0221 1.0135 121.8 23.4 2.15 39.7
2007 10 01 21 20 33.623 -36 02 14.82 0.0223 1.0132 121.7 23.4 2.16 39.6
2007 10 02 21 23 17.006 -35 22 04.26 0.0224 1.0130 121.6 23.4 2.18 39.5
2007 10 03 21 26 00.192 -34 41 31.23 0.0225 1.0128 121.5 23.4 2.20 39.5
2007 10 04 21 28 43.362 -34 00 35.37 0.0227 1.0125 121.4 23.4 2.22 39.4
2007 10 05 21 31 26.710 -33 19 16.46 0.0228 1.0123 121.3 23.5 2.24 39.4
2007 10 06 21 34 10.429 -32 37 34.53 0.0230 1.0121 121.3 23.5 2.26 39.5
2007 10 07 21 36 54.697 -31 55 29.81 0.0232 1.0119 121.2 23.5 2.28 39.6
2007 10 08 21 39 39.675 -31 13 02.72 0.0233 1.0116 121.1 23.5 2.31 39.7
2007 10 09 21 42 25.501 -30 30 13.92 0.0235 1.0114 121.1 23.5 2.33 39.8
2007 10 10 21 45 12.285 -29 47 04.24 0.0237 1.0112 121.0 23.5 2.36 40.0
2007 10 11 21 48 00.111 -29 03 34.69 0.0239 1.0110 120.9 23.6 2.38 40.1
2007 10 12 21 50 49.038 -28 19 46.41 0.0240 1.0108 120.9 23.6 2.40 40.3
2007 10 13 21 53 39.096 -27 35 40.73 0.0242 1.0106 120.8 23.6 2.42 40.5
2007 10 14 21 56 30.290 -26 51 19.07 0.0244 1.0104 120.8 23.6 2.45 40.7
2007 10 15 21 59 22.603 -26 06 42.96 0.0246 1.0102 120.8 23.6 2.47 41.0
2007 10 16 22 02 15.994 -25 21 54.05 0.0248 1.0100 120.7 23.7 2.49 41.2
2007 10 17 22 05 10.404 -24 36 54.05 0.0250 1.0098 120.7 23.7 2.50 41.4
2007 10 18 22 08 05.755 -23 51 44.77 0.0252 1.0096 120.7 23.7 2.52 41.6
2007 10 19 22 11 01.948 -23 06 28.12 0.0254 1.0094 120.7 23.7 2.54 41.9
2007 10 20 22 13 58.869 -22 21 06.06 0.0257 1.0093 120.7 23.7 2.55 42.1
2007 10 21 22 16 56.383 -21 35 40.67 0.0259 1.0091 120.6 23.7 2.56 42.3
2007 10 22 22 19 54.336 -20 50 14.10 0.0261 1.0089 120.6 23.8 2.57 42.5
2007 10 23 22 22 52.558 -20 04 48.56 0.0263 1.0087 120.6 23.8 2.57 42.7
2007 10 24 22 25 50.870 -19 19 26.28 0.0266 1.0086 120.6 23.8 2.58 42.9
2007 10 25 22 28 49.095 -18 34 09.40 0.0268 1.0084 120.6 23.8 2.58 43.0
2007 10 26 22 31 47.075 -17 48 59.86 0.0270 1.0083 120.6 23.8 2.58 43.2
2007 10 27 22 34 44.687 -17 03 59.32 0.0273 1.0081 120.6 23.9 2.57 43.3
2007 10 28 22 37 41.865 -16 19 09.08 0.0275 1.0080 120.5 23.9 2.57 43.5