[Iaude] MPEC X16: 2020 XD [a=2.49,e=0.60,i=5.6,H=25.7]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 5 14:53:08 EST 2020


M.P.E.C. 2020-X16                              Issued 2020 December 5, 19:51 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
    on behalf of Division F of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

             Prepared using the Tamkin Foundation Computer Network

                              MPC at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2020 XD                                     


Observations:
     K20X00D  C2020 11 08.37091902 52 47.074-01 59 06.90         23.34GVEX016F51
     K20X00D  C2020 11 14.39858102 59 04.687-01 21 21.58         21.56GVEX016F52
     K20X00D  C2020 11 14.43767702 59 06.910-01 20 57.41         22.34GVEX016F51
     K20X00D  C2020 11 17.29416 03 03 31.32 -00 43 57.5                VEX016G96
     K20X00D  C2020 11 17.29930 03 03 31.74 -00 43 52.2          21.4 GVEX016G96
     K20X00D  C2020 11 20.37824203 09 58.733+00 17 39.74         21.53GVEX016F52
     K20X00D  C2020 11 20.41721303 10 03.240+00 18 37.03         21.84GVEX016F52
     K20X00D* C2020 12 04.45912404 57 12.49 +18 33 47.0          19.02GVEX016G96
     K20X00D  C2020 12 04.46454404 57 18.87 +18 34 44.6          19.75GVEX016G96
     K20X00D  C2020 12 04.46997704 57 25.26 +18 35 43.0          18.72GVEX016G96
     K20X00D  C2020 12 04.47545204 57 31.76 +18 36 41.4          19.22GVEX016G96
     K20X00D KC2020 12 04.49491804 57 54.98 +18 40 10.1          19.13GVEX016I52
     K20X00D KC2020 12 04.49681604 57 57.20 +18 40 30.4          19.40GVEX016I52
     K20X00D  C2020 12 04.49949904 58 06.829+18 42 13.76         18.87GVEX016F52
     K20X00D  C2020 12 04.51048804 58 19.466+18 44 13.18         19.06GVEX016F52
     K20X00D  C2020 12 04.52151404 58 32.220+18 46 13.13         19.09GVEX016F52
     K20X00D  C2020 12 04.71064 05 02 41.42 +19 20 14.8          18.6 GVEX016N88
     K20X00D  C2020 12 04.71098 05 02 41.84 +19 20 18.9          18.6 GVEX016N88
     K20X00D  C2020 12 04.71137 05 02 42.27 +19 20 22.8          19.2 GVEX016N88
     K20X00D  C2020 12 04.71170 05 02 42.66 +19 20 26.9          19.1 GVEX016N88
     K20X00D  C2020 12 04.71205 05 02 43.12 +19 20 30.7          18.8 GVEX016N88
     K20X00D KC2020 12 04.85967005 06 01.18 +19 48 24.3          18.3 GVEX016B49
     K20X00D KC2020 12 04.86569405 06 08.84 +19 49 35.1          18.2 GVEX016B49
     K20X00D KC2020 12 04.87171305 06 16.60 +19 50 46.1          19.3 GVEX016B49
     K20X00D KC2020 12 05.14917505 12 34.24 +20 45 03.0          18.8 VuEX016H21
     K20X00D KC2020 12 05.15121705 12 36.97 +20 45 27.4          18.9 VuEX016H21
     K20X00D KC2020 12 05.15325905 12 39.73 +20 45 51.8          19.0 VuEX016H21
     K20X00D KC2020 12 05.16003405 12 51.71 +20 46 15.2          19.2 VqEX016U55
     K20X00D mC2020 12 05.17284305 13 10.65 +20 49 56.5          19.15GVEX016I52
     K20X00D mC2020 12 05.17303205 13 10.90 +20 49 59.3          19.02GVEX016I52
     K20X00D mC2020 12 05.17322105 13 11.17 +20 50 01.1          18.89GVEX016I52
     K20X00D mC2020 12 05.17340905 13 11.56 +20 50 01.6                VEX016I52
     K20X00D KC2020 12 05.17442005 13 11.58 +20 49 10.5          19.5 VqEX016U55
     K20X00D KC2020 12 05.19933 05 13 45.72 +20 54 50.4          18.7 GVEX016V01
     K20X00D KC2020 12 05.24016 05 14 41.40 +21 03 07.9          18.8 GVEX016V01
     K20X00D KC2020 12 05.36761 05 17 35.98 +21 29 19.9          18.5 RoEX016691
     K20X00D KC2020 12 05.38203 05 17 55.92 +21 32 12.4          18.5 RoEX016691
     K20X00D KC2020 12 05.39647 05 18 16.08 +21 35 05.0          18.7 RoEX016691

Observer details:
691 Steward Observatory, Kitt Peak-Spacewatch.  Observer T. H. Bressi.  0.9-m
    f/3 reflector + CCD.
B49 Paus Observatory, Sabadell.  Observer J. Camarasa.  0.30-m f/4 reflector +
    CCD.
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
    Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
    Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T.
    Lowe, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y.
    Ramanjooloo, R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observers K. W. Wierzchos, G. J. Leonard.  Measurers
    K. W. Wierzchos, B. Gray, D. Rankin, F. C. Shelly, E. J. Christensen, G.
    A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
    Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, R. L. Seaman.  1.5-m
    reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
    astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers D. Rankin, D. C. Fuls.
    Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
    Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A.
    Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m
    reflector + CCD.
N88 Xingming Observatory #3, Nanshan.  Observer X. Gao.  Measurer Q.-Z. Ye.
    0.6-m f/8 Ritchey-Chretien + CCD.
U55 Golden Ears Observatory, Maple Ridge.  Observer B. Kumar.  0.36-m f/7
    Schmidt-Cassegrain + CCD.
V01 Mountainville Observatory, Alpine.  Observer B. Sheets.  0.36-m reflector
    + CCD.

Orbital elements:
2020 XD                                                  Earth MOID = 0.0229 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 357.96035              (2000.0)            P               Q
n   0.25084017     Peri.   23.86903     -0.13988079     -0.98577939
a   2.4900304      Node    74.27766     +0.89217937     -0.16627255
e   0.6028407      Incl.    5.55177     +0.42947564     +0.02433977
P   3.93           H   25.7           G   0.15           U   6
Residuals in seconds of arc
201108 F51  0.2+  0.1-    201204 F52  0.4+  0.3+    201205 H21  0.2-  0.1-
201114 F52  0.4-  0.1+    201204 F52  0.1-  0.1+    201205 U55  1.0+  0.9-
201114 F51  0.0   0.1-    201204 F52  0.2-  0.1+    201205 I52  0.1-  0.3-
201117 G96  0.2-  0.1+    201204 N88  0.4+  0.2+    201205 I52  0.2-  0.2+
201117 G96  0.2-  0.5+    201204 N88  0.4+  0.4+    201205 I52  0.0   0.3-
201120 F52  0.0   0.1+    201204 N88  0.2-  0.1-    201205 I52 (1.9+  2.1-)
201120 F52  0.3-  0.2+    201204 N88  0.4-  0.2+    201205 U55  0.8+  0.6-
201204 G96  0.1-  0.0     201204 N88  0.1+  0.0     201205 V01 (1.9-  0.6-)
201204 G96  0.0   0.4-    201204 B49  0.1+  0.2-    201205 V01  1.2-  0.1+
201204 G96  0.3-  0.1-    201204 B49  0.5-  0.3-    201205 691  0.1+  0.4+
201204 G96  0.1+  0.3-    201204 B49  0.5+  0.1-    201205 691  0.4-  0.2+
201204 I52  0.6+  0.2+    201205 H21  0.3-  0.5+    201205 691  0.6+  0.2+
201204 I52  0.2-  0.2+    201205 H21  0.5-  0.2+

Ephemeris:
2020 XD                  a,e,i = 2.49, 0.60, 6                   q = 0.9889
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 05    02 50 16.9 -02 04 07   0.2023  1.1857   162.1    14.9    23.4
...
2020 11 20    03 09 03.3 +00 09 06   0.1113  1.0927   158.8    19.0    22.1
...
2020 11 28    03 40 58.5 +05 45 58   0.06929 1.0528   162.3    16.6    20.9
...
2020 12 04    04 48 25.8 +17 13 11   0.04300 1.0284   174.8     5.0    19.3
2020 12 05    05 08 59.3 +20 17 02   0.03961 1.0249   174.3     5.4    19.2
2020 12 06    05 34 05.5 +23 40 36   0.03671 1.0215   170.0     9.7    19.2
...
2020 12 12    09 33 12.4 +36 44 43   0.03496 1.0045   123.9    54.5    20.4
...
2020 12 20    12 19 24.9 +27 05 25   0.06403 0.9913    94.9    81.4    22.6
...
2021 01 04    13 21 05.2 +19 05 33   0.1329  0.9977    92.4    79.9    24.1

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X16




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