"Pseudo-MPEC" for 2015 DU

Created 2015 Feb 21 14:39:06 UT using Find_Orb

Astrometry:
     K15D00U  C2015 01 08.46248 09 28 30.202+72 48 36.96         21.4 i      F51
     K15D00U  C2015 01 08.47590 09 28 32.944+72 48 44.96         21.4 i      F51
     K15D00U  C2015 01 08.50274 09 28 38.103+72 48 57.61         21.2 i      F51
     K15D00U  C2015 02 07.48810 11 57 29.548+54 46 07.57         20.2 i      F51
     K15D00U  C2015 02 07.51677 11 57 26.231+54 43 44.40         20.3 i      F51
     K15D00U  C2015 02 07.53118 11 57 24.492+54 42 29.07         20.2 i      F51
     K15D00U  C2015 02 17.66154 12 05 42.128+34 31 39.77         19.4 zL.rwo F51
     K15D00U  C2015 02 17.66354 12 05 41.881+34 31 19.48         19.7 zL.rwo F51
     K15D00U KC2015 02 18.13523 12 05 54.60 +33 18 59.1          19.2 Ro.rwo 461
     K15D00U KC2015 02 18.13812 12 05 54.27 +33 18 31.6          18.7 Ro.rwo 461
     K15D00U KC2015 02 18.14101 12 05 53.97 +33 18 04.2          18.8 Ro.rwo 461
     K15D00U KC2015 02 18.40394 12 06 00.60 +32 40 06.8          19.3 Rq.rwo H36
     K15D00U KC2015 02 18.41423 12 05 59.08 +32 38 30.0          19.3 Rq.rwo H36
     K15D00U KC2015 02 18.42841 12 05 56.96 +32 36 17.0          19.5 Rq.rwo H36
     K15D00U KC2015 02 18.43526 12 05 55.93 +32 35 11.3          19.1 Rq.rwo H36
     K15D00U _C2015 02 18.45848812 06 20.397+32 33 59.69         18.7 Rt.rwo 568
     K15D00U _C2015 02 18.46097712 06 19.953+32 33 38.63         18.9 Rt.rwo 568
     K15D00U _C2015 02 18.46467912 06 19.288+32 33 07.17         18.9 Rt.rwo 568
     K15D00U KC2015 02 19.16162 12 05 58.29 +30 43 16.4                q.rwo J95
     K15D00U KC2015 02 19.16324 12 05 58.06 +30 43 01.1          19.1 Rq.rwo J95
     K15D00U KC2015 02 20.34724 12 05 55.02 +27 39 58.6          19.8 Vq.rwo H21
     K15D00U KC2015 02 20.35043 12 05 54.49 +27 39 28.2          19.7 Vq.rwo H21
     K15D00U KC2015 02 20.35361 12 05 53.91 +27 38 57.5          19.6 Vq.rwo H21
     K15D00U KC2015 02 20.43529312 05 46.45 +27 26 56.9          19.3 Rq.rwo V37
     K15D00U KC2015 02 20.43710712 05 46.13 +27 26 39.0          19.5 Rq.rwo V37
     K15D00U KC2015 02 20.43887812 05 45.82 +27 26 21.2          19.2 Rq.rwo V37
     K15D00U KC2015 02 20.44067912 05 45.50 +27 26 03.5          19.3 Rq.rwo V37
     K15D00U KC2015 02 20.44254012 05 45.18 +27 25 44.8          19.5 Rq.rwo V37
     K15D00U KC2015 02 20.44441512 05 44.87 +27 25 26.4          19.5 Rq.rwo V37
     K15D00U KC2015 02 20.44626412 05 44.55 +27 25 08.0          19.3 Rq.rwo V37
     K15D00U KC2015 02 20.44811112 05 44.25 +27 24 49.7          19.6 Rq.rwo V37
     K15D00U KC2015 02 20.45005612 05 43.95 +27 24 30.2          19.5 Rq.rwo V37

Station data:
(461) University of Szeged, Piszkesteto Stn (Konkoly)  (N47.9181 E19.8943)  Hungary.
     0.60-m Schmidt.
(568) Mauna Kea (N19.8262 W155.4722)  US/Hawaii.   Observer D. J. Tholen.
    2.24-m University of Hawaii reflector.
(F51) Pan-STARRS 1, Haleakala (N20.70733 W156.25591)  US/Hawaii.   Observers
    B. Gibson, T. Goggia, N. Primak, A. Schultz, M. Willman.  Measurer P.
    Veres.  1.8-m Ritchey-Chretien + CCD.
(H21) Astronomical Research Observatory, Westfield (N39.48311 W87.96827)  US/Illinois.
(H36) Sandlot Observatory, Scranton (N38.7977 W95.7064)  US/Kansas.   Observer
    G. Hug.  0.56-m reflector + CCD.
(J95) Great Shefford (N51.47502 W1.44700)  UK.   Observer P. Birtwhistle.
    0.30-m f/6.3 Schmidt-Cassegrain + CCD.
(V37) McDonald Observatory-LCOGT ELP (N30.67996 W104.01517)  US/Texas.

Orbital elements:  2015 DU
   Perihelion 2015 Feb 5.212148 +/- 0.00133 TT =  5:05:29 (JD 2457058.712148)
Epoch 2015 Feb 20.0 TT = JDT 2457073.5   Earth MOID: 0.0195   Find_Orb
M  12.57055 +/- 0.0016
n   0.85005985 +/- 3.82e-5          Peri.  153.82097 +/- 0.0011
a   1.10366273 +/- 3.31e-5          Node   342.19330 +/- 0.00032
e   0.0907645 +/- 2.29e-5           Incl.    2.76553 +/- 0.0007
P   1.16/423.49d           H 26.6   G  0.15   U  5.9  
q 1.00348928 +/- 4.76e-6    Q 1.20383618 +/- 6.14e-5
From 32 observations 2015 Jan. 8-Feb. 20; mean residual 0".31
Residuals in arcseconds:
150108 F51  .06-  .05-    150218 H36  .20-  .57-    150220 H21  .53-  .05+    
150108 F51  .09+  .02-    150218 H36  .53+  .96-    150220 V37  .35+  .16+    
150108 F51  .07+  .02+    150218 H36  .43+  .07+    150220 V37  .26+  .19+    
150207 F51  .32+  .07+    150218 H36  .07-  .41-    150220 V37  .18+  .08-    
150207 F51  .12-  .25+    150218 568  .02-  .25+    150220 V37  .03+  .06+    
150207 F51  .01+  .13+    150218 568  .00   .37+    150220 V37  .01-  .18-    
150217 F51  .29-  .28-    150218 568  .03+  .50+    150220 V37  .09+  .03+    
150217 F51  .25-  .89-    150219 J95  .77+  .63-    150220 V37  .02-  .02+    
150218 461  .22-  .15+    150219 J95  .33+  .43-    150220 V37  .11+  .10+    
150218 461  .32-  .13+    150220 H21  .19+  .07+    150220 V37  .44+  .02-    
150218 461  .09-  .26+    150220 H21  .18+  .23+    

Ephemerides (geocentric):
Date (UT)    RA              Dec         delta   r     elong  mag " sig PA
---- -- --  ------------   ------------  ------ ------ -----  --- ---- ---
2015 02 22  12 05 32.137   +23 17 00.27  .02056 1.0072 151.6 19.4  0.2  30
2015 02 23  12 05 11.110   +20 34 20.79  .02051 1.0077 153.3 19.3  0.4  27
2015 02 24  12 04 46.474   +17 50 47.21  .02052 1.0081 154.9 19.3  0.5  24
2015 02 25  12 04 18.761   +15 07 17.32  .02057 1.0086 156.4 19.3  0.7  21
2015 02 26  12 03 48.419   +12 24 49.06  .02069 1.0091 157.8 19.2  0.8  19
2015 02 27  12 03 15.815   +09 44 18.62  .02085 1.0097 159.0 19.2  1.0  17
2015 02 28  12 02 41.247   +07 06 38.62  .02108 1.0102 159.9 19.2  1.2  15
2015 03 01  12 02 04.958   +04 32 36.73  .02135 1.0108 160.7 19.2  1.5  14
2015 03 02  12 01 27.143   +02 02 54.59  .02167 1.0114 161.2 19.2  1.7  13
2015 03 03  12 00 47.959   -00 21 52.78  .02204 1.0121 161.5 19.3  1.9  12
2015 03 04  12 00 07.537   -02 41 17.25  .02245 1.0127 161.6 19.3  2.2  11
2015 03 05  11 59 25.981   -04 54 57.43  .02291 1.0134 161.5 19.3  2.4  10
2015 03 06  11 58 43.382   -07 02 38.31  .02342 1.0141 161.2 19.4  2.6   9
2015 03 07  11 57 59.820   -09 04 10.65  .02396 1.0148 160.8 19.5  2.9   9
2015 03 08  11 57 15.375   -10 59 30.31  .02454 1.0155 160.3 19.5  3.1   8
2015 03 09  11 56 30.125   -12 48 37.42  .02515 1.0163 159.7 19.6  3.3   8
2015 03 10  11 55 44.162   -14 31 35.71  .02580 1.0170 159.0 19.7  3.6   8
2015 03 11  11 54 57.587   -16 08 31.73  .02648 1.0178 158.3 19.8  3.8   7
2015 03 12  11 54 10.521   -17 39 34.26  .02719 1.0187 157.7 19.8  4.0   7
2015 03 13  11 53 23.109   -19 04 53.70  .02792 1.0195 157.0 19.9  4.2   7
2015 03 14  11 52 35.521   -20 24 41.63  .02869 1.0203 156.3 20.0  4.4   7
2015 03 15  11 51 47.962   -21 39 10.47  .02948 1.0212 155.7 20.1  4.6   7
2015 03 16  11 51 00.672   -22 48 33.12  .03030 1.0221 155.0 20.2  4.7   8
2015 03 17  11 50 13.936   -23 53 02.87  .03114 1.0230 154.4 20.2  4.9   8
2015 03 18  11 49 28.080   -24 52 53.21  .03200 1.0239 153.9 20.3  5.0   8
2015 03 19  11 48 43.468   -25 48 17.83  .03289 1.0249 153.3 20.4  5.2   8
2015 03 20  11 48 00.485   -26 39 30.51  .03380 1.0259 152.8 20.5  5.3   8
2015 03 21  11 47 19.520   -27 26 45.15  .03473 1.0268 152.3 20.5  5.4   9
2015 03 22  11 46 40.937   -28 10 15.54  .03568 1.0278 151.9 20.6  5.5   9
2015 03 23  11 46 05.052   -28 50 15.24  .03665 1.0289 151.5 20.7  5.6   9
2015 03 24  11 45 32.119   -29 26 57.42  .03764 1.0299 151.1 20.8  5.7   9
2015 03 25  11 45 02.328   -30 00 34.63  .03865 1.0310 150.7 20.8  5.8   9
2015 03 26  11 44 35.807   -30 31 18.72  .03968 1.0320 150.3 20.9  5.9   9
2015 03 27  11 44 12.630   -30 59 20.82  .04072 1.0331 150.0 21.0  5.9   9
2015 03 28  11 43 52.834   -31 24 51.25  .04179 1.0342 149.7 21.0  6.0   9
2015 03 29  11 43 36.420   -31 47 59.62  .04286 1.0353 149.4 21.1  6.0   9
2015 03 30  11 43 23.370   -32 08 54.82  .04396 1.0364 149.1 21.2  6.1   9
2015 03 31  11 43 13.645   -32 27 45.07  .04507 1.0376 148.9 21.2  6.1   9
2015 04 01  11 43 07.195   -32 44 38.00  .04619 1.0387 148.6 21.3  6.2   9
2015 04 02  11 43 03.964   -32 59 40.61  .04733 1.0399 148.4 21.3  6.2   9
2015 04 03  11 43 03.885   -33 12 59.42  .04849 1.0411 148.1 21.4  6.3   9
2015 04 04  11 43 06.892   -33 24 40.39  .04966 1.0423 147.9 21.5  6.3   9
2015 04 05  11 43 12.918   -33 34 49.05  .05085 1.0435 147.7 21.5  6.3   9
2015 04 06  11 43 21.900   -33 43 30.51  .05205 1.0447 147.5 21.6  6.3   9
2015 04 07  11 43 33.781   -33 50 49.49  .05327 1.0460 147.3 21.6  6.4   9
2015 04 08  11 43 48.513   -33 56 50.36  .05450 1.0472 147.1 21.7  6.4   8
2015 04 09  11 44 06.060   -34 01 37.24  .05575 1.0485 146.9 21.8  6.4   8
2015 04 10  11 44 26.399   -34 05 13.98  .05702 1.0498 146.7 21.8  6.4   8
2015 04 11  11 44 49.523   -34 07 44.25  .05830 1.0510 146.5 21.9  6.4   8
2015 04 12  11 45 15.443   -34 09 11.58  .05960 1.0523 146.3 21.9  6.4   8
2015 04 13  11 45 44.185   -34 09 39.42  .06092 1.0536 146.1 22.0  6.4   8
2015 04 14  11 46 15.793   -34 09 11.17  .06226 1.0549 145.9 22.0  6.4   8
2015 04 15  11 46 50.327   -34 07 50.24  .06362 1.0563 145.7 22.1  6.3   8
2015 04 16  11 47 27.859   -34 05 40.11  .06500 1.0576 145.5 22.1  6.3   8
2015 04 17  11 48 08.466   -34 02 44.33  .06640 1.0589 145.3 22.2  6.3   8
2015 04 18  11 48 52.219   -33 59 06.55  .06782 1.0603 145.1 22.2  6.3   8
2015 04 19  11 49 39.177   -33 54 50.42  .06926 1.0616 144.9 22.3  6.2   7
2015 04 20  11 50 29.374   -33 49 59.58  .07073 1.0630 144.7 22.3  6.2   7
2015 04 21  11 51 22.816   -33 44 37.54  .07221 1.0644 144.5 22.4  6.1   7
2015 04 22  11 52 19.480   -33 38 47.62  .07372 1.0658 144.3 22.5  6.1   7