"Pseudo-MPEC" for C/2015 D4

Created 2015 Jul 17 12:06:31 UT using Find_Orb

Astrometry:
    CK15D040  C2015 02 23.10458 21 08 51.59 +22 47 18.5         x16.8 Tq92445L51
    CK15D040  C2015 02 23.11875 21 08 53.11 +22 47 42.4          16.9 Tq92445L51
    CK15D040  C2015 02 23.13194 21 08 54.48 +22 48 04.4         x16.9 Tq92445L51
    CK15D040  C2015 02 25.09792 21 11 27.68 +23 37 56.2          17.4 Tq92445L51
    CK15D040  C2015 02 25.13055 21 11 30.06 +23 38 46.9          17.5 Tq92445L51
    CK15D040  C2015 02 26.09588 21 12 44.73 +24 03 18.8         x16.9 Tq92445L96
    CK15D040  C2015 02 26.09954 21 12 45.00 +24 03 22.7          17.5 Tq92445L96
    CK15D040  C2015 02 26.10422 21 12 45.47 +24 03 28.9          16.9 Tq92445L96
    CK15D040  C2015 02 26.10586 21 12 45.55 +24 03 31.5          17.1 Tq92445L96
    CK15D040  C2015 02 27.09628 21 14 01.72 +24 28 36.5          16.9 Tq92445L96
    CK15D040  C2015 02 27.09766 21 14 01.83 +24 28 39.1          17.5 Tq92445L96
    CK15D040  C2015 02 27.09868 21 14 01.84 +24 28 40.2          17.2 Tq92445L96
    CK15D040 |C2015 03 01.51679 21 17 05.93 +25 29 55.5                c92445H06
    CK15D040 |C2015 03 01.51882 21 17 06.08 +25 29 59.1                c92445H06
    CK15D040 |C2015 03 01.52084 21 17 06.22 +25 30 01.9          17.7 Tc92445H06
    CK15D040 9C2015 03 02.26300 21 18 02.26 +25 48 47.9          18.1 Nq93715G40
    CK15D040 9C2015 03 02.26999 21 18 02.75 +25 48 58.7          18.0 Nq93715G40
    CK15D040 9C2015 03 05.26514 21 21 46.05 +27 04 40.8          18.0 Nq93715G40
    CK15D040 9C2015 03 05.27190 21 21 46.55 +27 04 50.5                q93715G40
    CK15D040 KC2015 03 08.12795 21 25 15.51 +28 16 53.0          17.8 Nt93094L04
    CK15D040 KC2015 03 08.13860 21 25 16.26 +28 17 10.8          17.8 Nt93094L04
    CK15D040 KC2015 03 08.14378 21 25 16.72 +28 17 18.9          17.8 Nt93094L04
    CK15D040 |C2015 03 10.49962 21 28 06.37 +29 16 41.9         x      c93094H06
    CK15D040 |C2015 03 10.50161 21 28 06.48 +29 16 45.1         x      c93094H06
    CK15D040 |C2015 03 10.50361 21 28 06.60 +29 16 48.2         x17.1 Tc93094H06
    CK15D040 |C2015 03 12.49976 21 30 28.26 +30 07 08.6         x      c93094H06
    CK15D040 |C2015 03 12.50143 21 30 28.41 +30 07 11.2         x      c93094H06
    CK15D040 |C2015 03 12.50394 21 30 28.60 +30 07 14.9         x18.1 Tc93094H06
    CK15D040  C2015 03 17.14322 21 35 50.10 +32 03 59.5          18.9 No93094461
    CK15D040  C2015 03 17.14559 21 35 50.23 +32 04 01.7          17.0 To93094461
    CK15D040  C2015 03 17.14766 21 35 50.47 +32 04 06.0                o93094461
    CK15D040 KC2015 03 18.13962 21 36 57.73 +32 29 02.1                o93094461
    CK15D040 KC2015 03 18.14851 21 36 58.34 +32 29 15.2          18.0 To93094461
    CK15D040 KC2015 03 19.13058 21 38 04.50 +32 53 56.8          19.1 No93094461
    CK15D040 KC2015 03 19.13463 21 38 04.72 +32 54 02.8          19.3 No93094461
    CK15D040 KC2015 03 19.13949 21 38 05.09 +32 54 10.5          19.7 No93094461
    CK15D040 KC2015 03 19.14387 21 38 05.38 +32 54 17.6          19.2 No93094461
    CK15D040 |C2015 03 27.48107 21 47 05.99 +36 23 38.9                c93094H06
    CK15D040 |C2015 03 27.48315 21 47 06.17 +36 23 41.6                c93094H06
    CK15D040 |C2015 03 27.48522 21 47 06.32 +36 23 44.5          18.4 Tc93094H06
    CK15D040  C2015 03 29.78255 21 49 28.14 +37 21 19.0          17.4 Tm93715349
    CK15D040  C2015 03 29.79385 21 49 28.73 +37 21 34.8                m93715349
    CK15D040 KC2015 04 10.10432 22 00 18.13 +42 03 46.8          19.2 To93715461
    CK15D040 KC2015 04 10.10997 22 00 18.51 +42 03 55.6          18.9 To93715461
    CK15D040 KC2015 04 22.08007 22 10 02.55 +46 59 42.5         x18.3 Tq93715215
    CK15D040 KC2015 04 22.08262 22 10 02.60 +46 59 43.5          18.2 Tq93715215
    CK15D040 KC2015 04 22.08517 22 10 02.58 +46 59 43.9         x17.9 Tq93715215
    CK15D040 KC2015 06 20.99078 22 03 40.72 +68 59 02.8          19.1 Nc94414J01
    CK15D040 KC2015 06 20.99991 22 03 39.95 +68 59 13.6          20.0 Nc94414J01
    CK15D040 KC2015 06 21.00904 22 03 39.12 +68 59 22.5          20.0 Nc94414J01

Station data:
(215) Buchloe (N48.0174 E10.7328)  Germany.   Observer W. Hasubick.  0.44-m
    f/4.6 reflector + CCD.
(349) Ageo (N35.95651 E139.56622)  Japan.   Observer K. Kadota.  0.25-m f/5.0
    reflector + CCD.
(461) University of Szeged, Piszkesteto Stn (Konkoly)  (N47.9181 E19.8943)  Hungary.
      Observer K. Sárneczky.  0.60-m Schmidt + CCD.
(G40) Slooh.com Canary Islands Observatory (N28.29982 W16.50826)  Canary Islands (Spain).
(H06) iTelescope Observatory, Mayhill (N32.90343 W105.52870)  US/New Mexico.
    Observers E. Guido, G. Sostero, V. Gonano, L. Donato.
(J01) Observatorio Cielo Profundo, Oviedo (N42.37776 W5.71550)  Spain.
(L04) ROASTERR-1 Observatory, Cluj-Napoca (N46.82101 E23.59640)  Romania.
(L51) MARGO, Nauchnij (N44.7295 E34.0164)  Ukraine.
(L96) ISON-Byurakan Observatory (N40.3476 E44.2745)  Armenia.

Orbital elements:  C/2015 D4
   Perihelion 2014 Oct 28.248426 +/- 0.0032 TT =  5:57:44 (JD 2456958.748426)
Epoch 2015 Jun 21.0 TT = JDT 2457194.5   Earth MOID: 0.0043   Ju: 0.2122
M   0.32940 +/- 0.0019                                        Find_Orb
n   0.00139726 +/- 8.44e-6          Peri.  314.69153 +/- 0.0055
a  79.2409268 +/- 0.319             Node   305.80611 +/- 0.00052
e   0.9891276 +/- 4.27e-5           Incl.   77.30010 +/- 0.00030
P 705.38           M(N) 12.4    K  10.0     U  4.9  
q 0.86153474 +/- 0.000102    Q 157.620318 +/- 0.633
39 of 50 observations 2015 Feb. 23-June 21; mean residual 0".66
Residuals in arcseconds:
150223 L51(6.51- .889-)   150305 G40 .526+ .183+    150319 461 1.13- .824-    
150223 L51 .869- 1.33+    150305 G40 .561+ .411-    150319 461 .564- .488-    
150223 L51(3.78+ 3.14+)   150308 L04 .112- 1.94-    150319 461 .603- .024-    
150225 L51 1.41+ .404-    150308 L04 .395- .327-    150327 H06 .303- .822+    
150225 L51 .645- .432+    150308 L04 .729+ .098-    150327 H06 .310+ .376+    
150226 L96(.596- 2.95+)   150310 H06(1.37+ 1.42-)   150327 H06 .570+ .145+    
150226 L96 .757- 1.26+    150310 H06(.951+ 1.25-)   150329 349 .115- 1.58+    
150226 L96 .747+ .314+    150310 H06(.658+ 1.19-)   150329 349 1.27- .302+    
150226 L96 .114+ .409+    150312 H06(1.16+ 1.78+)   150410 461 .410- .546-    
150227 L96 .340+ .946-    150312 H06(1.58+ 1.84+)   150410 461 .472+ .214-    
150227 L96 .400+ .452-    150312 H06(1.76+ 1.73+)   150422 215(1.95+ 3.24+)   
150227 L96 .529- .910-    150317 461 .326+ .693+    150422 215 1.33+ .470+    
150301 H06 .284- .166+    150317 461 .069- .699-    150422 215(.010- 2.90-)   
150301 H06 .324- .670+    150317 461 1.19+ .463+    150620 J01 .359- .642-    
150301 H06 .489- .389+    150318 461 .205- .360-    150620 J01 .013+ .551+    
150302 G40 .493+ .263-    150318 461 .072- .733-    150621 J01 .070+ .153-    
150302 G40 .029+ .122-    150319 461 .480- .688-    

Ephemerides (geocentric):
Date (UT)    RA              Dec         delta   r     elong  mag " sig PA
---- -- --  ------------   ------------  ------ ------ -----  --- ---- ---
2015 07 18  20 52 43.006   +74 42 40.33  3.7850 3.8074  83.6 21.1  0.7  87
2015 07 19  20 49 00.471   +74 49 23.13  3.7927 3.8182  83.8 21.1  0.7  86
2015 07 20  20 45 14.847   +74 55 35.66  3.8004 3.8290  83.9 21.1  0.7  84
2015 07 21  20 41 26.451   +75 01 17.68  3.8082 3.8398  84.1 21.1  0.7  83
2015 07 22  20 37 35.619   +75 06 29.02  3.8160 3.8505  84.3 21.1  0.7  82
2015 07 23  20 33 42.703   +75 11 09.54  3.8239 3.8613  84.5 21.1  0.8  81
2015 07 24  20 29 48.069   +75 15 19.18  3.8318 3.8720  84.7 21.2  0.8  79
2015 07 25  20 25 52.094   +75 18 57.93  3.8397 3.8828  84.9 21.2  0.8  78
2015 07 26  20 21 55.164   +75 22 05.84  3.8476 3.8935  85.0 21.2  0.8  77
2015 07 27  20 17 57.671   +75 24 43.01  3.8556 3.9042  85.2 21.2  0.8  75
2015 07 28  20 14 00.011   +75 26 49.61  3.8636 3.9149  85.4 21.2  0.9  74
2015 07 29  20 10 02.580   +75 28 25.85  3.8717 3.9256  85.5 21.2  0.9  73
2015 07 30  20 06 05.772   +75 29 32.02  3.8797 3.9363  85.7 21.3  0.9  72
2015 07 31  20 02 09.974   +75 30 08.43  3.8878 3.9469  85.9 21.3  0.9  70
2015 08 01  19 58 15.568   +75 30 15.46  3.8960 3.9576  86.0 21.3  0.9  69
2015 08 02  19 54 22.925   +75 29 53.54  3.9042 3.9682  86.2 21.3  1.0  68
2015 08 03  19 50 32.407   +75 29 03.13  3.9124 3.9789  86.4 21.3  1.0  66
2015 08 04  19 46 44.360   +75 27 44.72  3.9206 3.9895  86.5 21.3  1.0  65
2015 08 05  19 42 59.121   +75 25 58.87  3.9289 4.0001  86.7 21.4  1.0  64
2015 08 06  19 39 17.006   +75 23 46.14  3.9372 4.0107  86.8 21.4  1.1  63
2015 08 07  19 35 38.318   +75 21 07.16  3.9455 4.0213  87.0 21.4  1.1  62
2015 08 08  19 32 03.339   +75 18 02.59  3.9539 4.0319  87.1 21.4  1.1  60
2015 08 09  19 28 32.334   +75 14 33.11  3.9623 4.0424  87.2 21.4  1.1  59
2015 08 10  19 25 05.543   +75 10 39.45  3.9707 4.0530  87.4 21.4  1.1  58
2015 08 11  19 21 43.188   +75 06 22.35  3.9791 4.0635  87.5 21.5  1.2  57
2015 08 12  19 18 25.464   +75 01 42.59  3.9876 4.0741  87.7 21.5  1.2  56
2015 08 13  19 15 12.548   +74 56 40.96  3.9962 4.0846  87.8 21.5  1.2  55
2015 08 14  19 12 04.590   +74 51 18.26  4.0047 4.0951  87.9 21.5  1.2  53
2015 08 15  19 09 01.721   +74 45 35.32  4.0133 4.1056  88.1 21.5  1.2  52
2015 08 16  19 06 04.048   +74 39 32.96  4.0219 4.1161  88.2 21.5  1.3  51