"Pseudo-MPEC" for SWAN25F
Created 2025 Apr 2 23:39:37 UT using Find_Orb
Click here for an explanation of pseudo-MPECs
Astrometry:
SWAN25F S2025 03 22.5 22 42 06 +15 34 60' 249
SWAN25F s2025 03 22.5 1 +1622471.90 -260539.138 -228079.159 249
SWAN25F S2025 03 23.5 22 44 48 +15 51 60' 249
SWAN25F s2025 03 23.5 1 +1624370.60 -252769.718 -222450.919 249
SWAN25F S2025 03 24.5 22 48 06 +16 30 60' 249
SWAN25F s2025 03 24.5 1 +1626101.50 -244488.318 -216468.399 249
SWAN25F S2025 03 26.5 22 51 30 +17 10 60' 249
SWAN25F s2025 03 26.5 1 +1628797.70 -226387.018 -203455.778 249
SWAN25F S2025 03 27.5 22 55 36 +18 12 60' 249
SWAN25F s2025 03 27.5 1 +1629636.50 -216597.958 -196450.918 249
SWAN25F S2025 03 28.5 23 00 24 +19 01 60' 249
SWAN25F s2025 03 28.5 1 +1630064.60 -206359.237 -189142.598 249
SWAN25F S2025 03 29.5 23 02 30 +19 32 60' 9 V 249
SWAN25F s2025 03 29.5 1 +1630046.70 -195716.797 -181560.088 249
SWAN25F C2025 03 30.22780 23 03 54.86 +20 18 31.4 .50 11.8 Vq XXX
SWAN25F VK250402:120920 348.1907 +22.3107 .50 10.8 gW 247
SWAN25F vK250402:120920 1 248.51869 +34.94789 2180 247
SWAN25F VK250402:121051 348.1913 +22.3114 .50 12.0 rW 247
SWAN25F vK250402:121051 1 248.51869 +34.94789 2180 247
Station data:
(247) Roving Observer (N34.947890 W111.481310) US/Arizona. Observer Q.
Zhang. 0.04-m refractor.
(249) SOHO. Observer R. Matson.
(XXX) Temporary MPC code (N38.218389 W6.630306) Spain. I-TEL T80 135 mm
f/2.8 Samyang Lens + CMOS + CCD.
Orbital elements: SWAN25F
Perihelion 2025 Feb 12.063468 +/- 34.515 TT; Constraint: e=1
Epoch 2025 Apr 2.0 TT = JDT 2460767.5 Earth MOID: 0.4690 Ju: 0.9470
q 0.512602205 +/- 0.75951 Me: 0.0566 Sa: 0.5079 Ur: 0.6755
H 8.24 G 0.15 Peri. 337.963255 +/- 22.78
Node 272.262596 +/- 51.58
e 1.0 +/- 0 Incl. 46.507785 +/- 0.0758
From 10 observations 2025 Mar. 22-Apr. 2; mean residual 1091".119
Residuals in arcseconds:
250322 249 295+ 1250+ 250327 249 468- 1781- 250402 247 .166+ .131-
250323 249 95.3+ 330- 250328 249 1236+ 1204- 250402 247 .167- .132+
250324 249 437+ 539- 250329 249 659+ 1662-
250326 249 1567- 3094- 250330 XXX .000 .000
Ephemerides (geocentric):
Date (UTC) HH RA Dec delta elong SM mag Con " sig PA
---- -------- ------------ ------------ ------ ----- -- --- --- --------
2025 04 03 00 23 14 04.117 +22 36 09.50 1.9657 28.7 N 11.2 Peg 3.09 52
2025 04 03 01 23 14 10.740 +22 37 37.61 1.9663 28.7 N 11.2 Peg 3.36 50
2025 04 03 02 23 14 17.361 +22 39 05.66 1.9669 28.7 N 11.2 Peg 3.64 49
2025 04 03 03 23 14 23.980 +22 40 33.63 1.9675 28.7 N 11.2 Peg 3.93 49
2025 04 03 04 23 14 30.596 +22 42 01.55 1.9681 28.7 N 11.2 Peg 4.22 48
2025 04 03 05 23 14 37.210 +22 43 29.40 1.9687 28.7 N 11.2 Peg 4.52 47
2025 04 03 06 23 14 43.821 +22 44 57.18 1.9693 28.7 N 11.2 Peg 4.82 46
2025 04 03 07 23 14 50.430 +22 46 24.90 1.9699 28.7 N 11.2 Peg 5.13 46
2025 04 03 08 23 14 57.037 +22 47 52.55 1.9705 28.8 N 11.2 Peg 5.44 45
2025 04 03 09 23 15 03.641 +22 49 20.14 1.9711 28.8 N 11.2 Peg 5.76 45
2025 04 03 10 23 15 10.243 +22 50 47.67 1.9717 28.8 N 11.2 Peg 6.08 44
2025 04 03 11 23 15 16.843 +22 52 15.13 1.9723 28.8 N 11.2 Peg 6.41 44
2025 04 03 12 23 15 23.441 +22 53 42.52 1.9729 28.8 N 11.2 Peg 6.74 44
2025 04 03 13 23 15 30.036 +22 55 09.85 1.9735 28.8 N 11.2 Peg 7.08 43
2025 04 03 14 23 15 36.628 +22 56 37.12 1.9741 28.8 N 11.2 Peg 7.42 43
2025 04 03 15 23 15 43.219 +22 58 04.32 1.9747 28.8 N 11.2 Peg 7.77 43
2025 04 03 16 23 15 49.807 +22 59 31.46 1.9753 28.8 N 11.2 Peg 8.13 43
2025 04 03 17 23 15 56.393 +23 00 58.54 1.9759 28.9 N 11.2 Peg 8.48 42
2025 04 03 18 23 16 02.976 +23 02 25.55 1.9765 28.9 N 11.2 Peg 8.85 42
2025 04 03 19 23 16 09.557 +23 03 52.50 1.9771 28.9 N 11.2 Peg 9.22 42
2025 04 03 20 23 16 16.136 +23 05 19.38 1.9777 28.9 N 11.2 Peg 9.59 42
2025 04 03 21 23 16 22.713 +23 06 46.20 1.9783 28.9 N 11.2 Peg 9.97 42
2025 04 03 22 23 16 29.287 +23 08 12.95 1.9789 28.9 N 11.2 Peg 10.3 41
2025 04 03 23 23 16 35.859 +23 09 39.65 1.9795 28.9 N 11.2 Peg 10.7 41
2025 04 04 00 23 16 42.428 +23 11 06.28 1.9801 28.9 N 11.2 Peg 11.1 41
2025 04 04 01 23 16 48.996 +23 12 32.84 1.9807 28.9 N 11.2 Peg 11.5 41
2025 04 04 02 23 16 55.561 +23 13 59.34 1.9813 29.0 N 11.2 Peg 11.9 41
2025 04 04 03 23 17 02.123 +23 15 25.78 1.9819 29.0 N 11.2 Peg 12.3 41
2025 04 04 04 23 17 08.684 +23 16 52.16 1.9825 29.0 N 11.3 Peg 12.7 41
2025 04 04 05 23 17 15.242 +23 18 18.47 1.9831 29.0 N 11.3 Peg 13.2 41
2025 04 04 06 23 17 21.797 +23 19 44.72 1.9837 29.0 N 11.3 Peg 13.6 40
2025 04 04 07 23 17 28.351 +23 21 10.90 1.9843 29.0 N 11.3 Peg 14.0 40
2025 04 04 08 23 17 34.902 +23 22 37.02 1.9849 29.0 N 11.3 Peg 14.4 40
2025 04 04 09 23 17 41.451 +23 24 03.08 1.9855 29.0 N 11.3 Peg 14.9 40
2025 04 04 10 23 17 47.997 +23 25 29.08 1.9861 29.1 N 11.3 Peg 15.3 40
2025 04 04 11 23 17 54.542 +23 26 55.01 1.9867 29.1 N 11.3 Peg 15.8 40
2025 04 04 12 23 18 01.084 +23 28 20.88 1.9873 29.1 N 11.3 Peg 16.2 40
2025 04 04 13 23 18 07.623 +23 29 46.69 1.9879 29.1 N 11.3 Peg 16.7 40
2025 04 04 14 23 18 14.161 +23 31 12.44 1.9885 29.1 N 11.3 Peg 17.1 40
2025 04 04 15 23 18 20.696 +23 32 38.12 1.9891 29.1 N 11.3 Peg 17.6 40
2025 04 04 16 23 18 27.228 +23 34 03.74 1.9897 29.1 N 11.3 Peg 18.0 40
2025 04 04 17 23 18 33.759 +23 35 29.30 1.9903 29.1 N 11.3 Peg 18.5 40
2025 04 04 18 23 18 40.287 +23 36 54.80 1.9909 29.1 N 11.3 Peg 19.0 40
2025 04 04 19 23 18 46.813 +23 38 20.23 1.9915 29.2 N 11.3 Peg 19.5 40
2025 04 04 20 23 18 53.337 +23 39 45.60 1.9921 29.2 N 11.3 Peg 20.0 40
2025 04 04 21 23 18 59.858 +23 41 10.91 1.9927 29.2 N 11.3 Peg 20.4 39
2025 04 04 22 23 19 06.377 +23 42 36.16 1.9933 29.2 N 11.3 Peg 20.9 39
2025 04 04 23 23 19 12.894 +23 44 01.34 1.9939 29.2 N 11.3 Peg 21.4 39
2025 04 05 00 23 19 19.408 +23 45 26.47 1.9945 29.2 N 11.3 Peg 21.9 39
2025 04 05 01 23 19 25.921 +23 46 51.53 1.9951 29.2 N 11.3 Peg 22.5 39
2025 04 05 02 23 19 32.431 +23 48 16.53 1.9957 29.2 N 11.3 Peg 23.0 39
2025 04 05 03 23 19 38.938 +23 49 41.47 1.9963 29.2 N 11.3 Peg 23.5 39
2025 04 05 04 23 19 45.444 +23 51 06.34 1.9969 29.3 N 11.3 Peg 24.0 39
2025 04 05 05 23 19 51.947 +23 52 31.16 1.9975 29.3 N 11.3 Peg 24.5 39
2025 04 05 06 23 19 58.448 +23 53 55.91 1.9981 29.3 N 11.3 Peg 25.1 39
2025 04 05 07 23 20 04.946 +23 55 20.60 1.9987 29.3 N 11.3 Peg 25.6 39
2025 04 05 08 23 20 11.443 +23 56 45.23 1.9993 29.3 N 11.3 Peg 26.1 39
2025 04 05 09 23 20 17.937 +23 58 09.80 1.9999 29.3 N 11.3 Peg 26.7 39
2025 04 05 10 23 20 24.429 +23 59 34.31 2.0005 29.3 N 11.3 Peg 27.2 39
2025 04 05 11 23 20 30.918 +24 00 58.76 2.0011 29.3 N 11.3 Peg 27.8 39
2025 04 05 12 23 20 37.405 +24 02 23.14 2.0017 29.3 N 11.3 Peg 28.3 39
2025 04 05 13 23 20 43.890 +24 03 47.47 2.0023 29.4 N 11.3 Peg 28.9 39
2025 04 05 14 23 20 50.373 +24 05 11.73 2.0028 29.4 N 11.3 Peg 29.4 39
2025 04 05 15 23 20 56.854 +24 06 35.94 2.0034 29.4 N 11.3 Peg 30.0 39
2025 04 05 16 23 21 03.332 +24 08 00.08 2.0040 29.4 N 11.3 Peg 30.6 39
2025 04 05 17 23 21 09.808 +24 09 24.16 2.0046 29.4 N 11.3 Peg 31.2 39
2025 04 05 18 23 21 16.282 +24 10 48.18 2.0052 29.4 N 11.3 Peg 31.7 39
2025 04 05 19 23 21 22.753 +24 12 12.14 2.0058 29.4 N 11.3 Peg 32.3 39
2025 04 05 20 23 21 29.222 +24 13 36.04 2.0064 29.4 N 11.3 Peg 32.9 39
2025 04 05 21 23 21 35.689 +24 14 59.88 2.0070 29.4 N 11.3 Peg 33.5 39
2025 04 05 22 23 21 42.154 +24 16 23.65 2.0076 29.5 N 11.3 Peg 34.1 39
2025 04 05 23 23 21 48.617 +24 17 47.37 2.0082 29.5 N 11.3 Peg 34.7 39
2025 04 06 00 23 21 55.077 +24 19 11.03 2.0088 29.5 N 11.3 Peg 35.3 39
2025 04 06 01 23 22 01.535 +24 20 34.63 2.0094 29.5 N 11.3 Peg 35.9 39
2025 04 06 02 23 22 07.991 +24 21 58.16 2.0100 29.5 N 11.3 Peg 36.5 39
2025 04 06 03 23 22 14.444 +24 23 21.64 2.0106 29.5 N 11.3 Peg 37.2 39
2025 04 06 04 23 22 20.896 +24 24 45.06 2.0112 29.5 N 11.3 Peg 37.8 39
2025 04 06 05 23 22 27.345 +24 26 08.42 2.0118 29.5 N 11.3 Peg 38.4 39
2025 04 06 06 23 22 33.792 +24 27 31.71 2.0124 29.5 N 11.3 Peg 39.0 39
2025 04 06 07 23 22 40.236 +24 28 54.95 2.0130 29.6 N 11.3 Peg 39.7 39
2025 04 06 08 23 22 46.679 +24 30 18.13 2.0136 29.6 N 11.3 Peg 40.3 39
2025 04 06 09 23 22 53.119 +24 31 41.25 2.0142 29.6 N 11.3 Peg 41.0 39
2025 04 06 10 23 22 59.557 +24 33 04.30 2.0148 29.6 N 11.3 Peg 41.6 39
2025 04 06 11 23 23 05.992 +24 34 27.30 2.0154 29.6 N 11.3 Peg 42.3 39
2025 04 06 12 23 23 12.426 +24 35 50.24 2.0160 29.6 N 11.3 Peg 42.9 39
2025 04 06 13 23 23 18.857 +24 37 13.12 2.0166 29.6 N 11.3 Peg 43.6 39
2025 04 06 14 23 23 25.286 +24 38 35.94 2.0172 29.6 N 11.4 Peg 44.2 39
2025 04 06 15 23 23 31.713 +24 39 58.70 2.0178 29.6 N 11.4 Peg 44.9 39
2025 04 06 16 23 23 38.137 +24 41 21.40 2.0184 29.7 N 11.4 Peg 45.6 39
2025 04 06 17 23 23 44.560 +24 42 44.05 2.0190 29.7 N 11.4 Peg 46.2 39
2025 04 06 18 23 23 50.980 +24 44 06.63 2.0196 29.7 N 11.4 Peg 46.9 39
2025 04 06 19 23 23 57.398 +24 45 29.15 2.0202 29.7 N 11.4 Peg 47.6 39
2025 04 06 20 23 24 03.813 +24 46 51.62 2.0208 29.7 N 11.4 Peg 48.3 39
2025 04 06 21 23 24 10.227 +24 48 14.03 2.0214 29.7 N 11.4 Peg 49.0 39
2025 04 06 22 23 24 16.638 +24 49 36.37 2.0220 29.7 N 11.4 Peg 49.7 39
2025 04 06 23 23 24 23.047 +24 50 58.66 2.0226 29.7 N 11.4 Peg 50.4 39
2025 04 07 00 23 24 29.454 +24 52 20.89 2.0232 29.7 N 11.4 Peg 51.1 39
2025 04 07 01 23 24 35.859 +24 53 43.06 2.0238 29.8 N 11.4 Peg 51.8 39
2025 04 07 02 23 24 42.261 +24 55 05.18 2.0244 29.8 N 11.4 Peg 52.5 39
2025 04 07 03 23 24 48.661 +24 56 27.23 2.0250 29.8 N 11.4 Peg 53.2 39
RA/decs are astrometric J2000 coordinates (corrected for light
time lag, but in the inertial J2000 frame, i.e., not rotated
for precession or nutation, and differential light deflection is
not included.) Display can be turned on/off in the 'advanced
options' for ephemerides. When turning them on, you can select
from various format choices (base-60, decimal, different
precisions, etc.)
Distances are in kilometers for distances under one million km
(about 0.00668 AU), and in AUs for larger distances.
The "SM" (Sun-Moon) flags consist of one or two letters, extended
from a scheme used on JPL's Horizons system. Letters used are :
* Daytime (sun above horizon)
C Civil twilight (sun below horizon, but by less than 6 degrees)
N Nautical twilight (-12 < sun's altitude < -6 degrees)
A Astronomical twilight (-18 < sun's altitude < -12 degrees)
m Moon is in the sky, less than 50% illuminated
M Moon is in the sky, more than 50% illuminated
l Object transiting in front of moon
L Object occulted by moon
a Below altitude/horizon limits set for the observing site
d Outside declination limits for your site/mount
e Outside elongation limits for your site/mount
h Outside hour angle limits for your site/mount
g Some galactic confusion
G Lots of galactic confusion
B Object is below the horizon
Uncertainties are one-sigma values shown in arcseconds (unless they
are very large, in which case they are shown in arcminutes or degrees).
In theory, the object should be within this distance of the nominal
RA/dec 67% of the time, within twice that distance 95% of the time,
and within three times that distance 99.7% of the time. In practice,
astrometric errors are not actually Gaussian, which means these
uncertainties are sometimes over- or underestimated. So you may have
to look farther, or not nearly as far, as the uncertainties say.
The object will probably be offset from nominal somewhere along the
indicated position angle, especially if the orbit is well determined.
Three-letter constellation abbreviations specify the constellation
containing that RA/dec, as defined by the IAU's 1930 delineation.