[Iaude] MPEC X87: 2020 XN2 [a=2.07,e=0.61,i=3.7,H=23.4]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Dec 9 12:10:34 EST 2020


M.P.E.C. 2020-X87                              Issued 2020 December 9, 17:09 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 XN2                                    


Observations:
     K20X02N* C2020 12 08.12761301 42 58.65 +36 22 22.6          17.73GVEX087703
     K20X02N  C2020 12 08.13831001 43 29.50 +36 22 01.0          18.04GVEX087703
     K20X02N  C2020 12 08.14370101 43 45.26 +36 21 49.4                VEX087703
     K20X02N mC2020 12 08.17504001 45 15.36 +36 20 37.0          20.31GVEX087I52
     K20X02N mC2020 12 08.17517001 45 15.95 +36 20 34.4                VEX087I52
     K20X02N mC2020 12 08.17530101 45 16.18 +36 20 34.4          18.54GVEX087I52
     K20X02N KC2020 12 08.18308301 45 38.52 +36 20 17.0          17.78GVEX087I52
     K20X02N KC2020 12 08.18386501 45 40.74 +36 20 15.0          18.45GVEX087I52
     K20X02N KC2020 12 08.18465101 45 43.01 +36 20 13.1          17.98GVEX087I52
     K20X02N KC2020 12 08.18543901 45 45.29 +36 20 11.1          17.62GVEX087I52
     K20X02N  C2020 12 08.25345 01 48 58.81 +36 17 05.0          18.4 GVEX087V00
     K20X02N  C2020 12 08.25375 01 48 59.68 +36 17 04.1          18.7 GVEX087V00
     K20X02N  C2020 12 08.25406 01 49 00.56 +36 17 03.1          18.6 GVEX087V00
     K20X02N  C2020 12 08.25438 01 49 01.43 +36 17 02.2          18.3 GVEX087V00
     K20X02N 1C2020 12 08.68119 02 08 47.81 +35 51 21.3          18.6 VVEX087033
     K20X02N 1C2020 12 08.68153 02 08 48.69 +35 51 20.1          18.4 VVEX087033
     K20X02N 1C2020 12 08.68188 02 08 49.58 +35 51 18.9          18.4 VVEX087033
     K20X02N  C2020 12 08.68943 02 08 56.79 +35 51 40.0          18.1 GVEX087N88
     K20X02N  C2020 12 08.68971 02 08 57.49 +35 51 38.9          17.8 GVEX087N88
     K20X02N  C2020 12 08.69001 02 08 58.22 +35 51 37.8          18.4 GVEX087N88
     K20X02N  C2020 12 08.69030 02 08 58.97 +35 51 36.8          18.4 GVEX087N88
     K20X02N  C2020 12 08.69063 02 08 59.78 +35 51 35.2          18.0 GVEX087N88
     K20X02N KC2020 12 08.79294502 13 29.88 +35 43 59.0          17.8 GVEX087J69
     K20X02N KC2020 12 08.79303202 13 29.89 +35 43 59.0          17.9 GVEX087J69
     K20X02N KC2020 12 08.79404602 13 32.61 +35 43 54.2          17.8 GVEX087J69
     K20X02N KC2020 12 08.79413202 13 32.62 +35 43 54.2          18.0 GVEX087J69
     K20X02N KC2020 12 08.79514502 13 35.33 +35 43 49.4          17.6 GVEX087J69
     K20X02N KC2020 12 08.79523202 13 35.34 +35 43 49.4          17.6 GVEX087J69
     K20X02N KC2020 12 08.79743202 13 40.72 +35 43 40.7          18.2 GVEX087J69
     K20X02N KC2020 12 08.80073202 13 48.77 +35 43 28.4          18.6 GVEX087J69
     K20X02N KC2020 12 08.81977 02 14 31.24 +35 42 26.8          18.3 VVEX087L04
     K20X02N KC2020 12 08.82657 02 14 47.76 +35 41 56.4          18.3 VVEX087L04
     K20X02N KC2020 12 08.83327 02 15 03.98 +35 41 27.0          18.2 VVEX087L04
     K20X02N KC2020 12 08.99426 02 21 44.77 +35 29 31.1          17.9 GVEX087W34
     K20X02N KC2020 12 09.00444 02 22 08.32 +35 28 47.0          18.0 GVEX087W34
     K20X02N KC2020 12 09.01572 02 22 34.26 +35 27 57.5          18.0 GVEX087W34
     K20X02N KC2020 12 09.07774702 25 00.92 +35 23 02.8          17.58GVEX087I52
     K20X02N KC2020 12 09.07923602 25 04.22 +35 22 55.8          17.99GVEX087I52
     K20X02N KC2020 12 09.07962802 25 05.09 +35 22 54.1          18.13GVEX087I52
     K20X02N KC2020 12 09.08001802 25 05.97 +35 22 52.3          17.89GVEX087I52
     K20X02N KC2020 12 09.10138902 25 53.03 +35 21 11.1          18.4 VqEX087858
     K20X02N KC2020 12 09.10327602 25 57.23 +35 21 02.6          18.3 VqEX087858
     K20X02N KC2020 12 09.10524902 26 01.65 +35 20 53.3          18.0 VqEX087858
     K20X02N KC2020 12 09.10726902 26 06.16 +35 20 43.9          18.3 VqEX087858
     K20X02N KC2020 12 09.20761602 29 43.33 +35 12 12.6          18.2 VuEX087H21
     K20X02N KC2020 12 09.20852702 29 45.31 +35 12 08.0          18.0 VuEX087H21
     K20X02N KC2020 12 09.21130402 29 51.36 +35 11 53.2          18.4 VuEX087H21
     K20X02N  C2020 12 09.28146 02 32 26.65 +35 05 53.8          18.3  rEX087718
     K20X02N  C2020 12 09.28203 02 32 27.83 +35 05 51.5          18.1  rEX087718
     K20X02N  C2020 12 09.28259 02 32 29.11 +35 05 47.7          18.5  rEX087718
     K20X02N  C2020 12 09.28504 02 32 34.33 +35 05 34.8          18.3  rEX087718
     K20X02N  C2020 12 09.28561 02 32 35.40 +35 05 31.7          18.4  rEX087718
     K20X02N  C2020 12 09.28617 02 32 36.59 +35 05 28.6          18.7  rEX087718
     K20X02N  C2020 12 09.52506 02 41 06.83 +34 45 03.7          18.6 VqEX087900
     K20X02N  C2020 12 09.52837 02 41 13.35 +34 44 46.1          18.6 VqEX087900
     K20X02N  C2020 12 09.53168 02 41 19.88 +34 44 28.3          18.6 VqEX087900
     K20X02N  C2020 12 09.53498 02 41 26.43 +34 44 10.3          18.3 VqEX087900

Observer details:
033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
    Hoegner, B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
703 Catalina Sky Survey.  Observer R. A. Kowalski.  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.  0.68-m Schmidt + 10K
    CCD.
718 Tooele.  Observer P. Wiggins.  0.35-m f/5.5 Schmidt-Cassegrain + CCD.
858 Tebbutt Observatory, Edgewood.  Observer F. B. Zoltowski.  0.51-m Schmidt-
    Cassegrain + CCD.
900 Moriyama.  Observer Y. Ikari.  0.26-m f/7.0 reflector + 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. C. Fuls, D. Rankin.
    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.
J69 North Observatory, Clanfield.  Observer D. Briggs.  0.41-m f/4.5 Newtonian
    reflector + CCD.
L04 ROASTERR-1 Observatory, Cluj-Napoca.  Observer L. Hudin.  0.3-m f/5
    reflector + CCD.
N88 Xingming Observatory #3, Nanshan.  Observer X. Gao.  Measurer Q.-Z. Ye.
    0.6-m f/8 Ritchey-Chretien + CCD.
V00 Kitt Peak-Bok.  Observer H. Groeller.  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.  2.25-m reflector + CCD.
W34 Squirrel Valley Observatory, Columbus.  Observer R. L. Flynn.  0.36-m
    Schmidt-Cassegrain + CCD.

Orbital elements:
2020 XN2                                                 Earth MOID = 0.0212 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M  17.12674              (2000.0)            P               Q
n   0.33020745     Peri.  101.48410     +0.97776305     -0.19936810
a   2.0730581      Node   270.04057     +0.15794400     +0.90413664
e   0.6121511      Incl.    3.72985     +0.13796054     +0.37787472
P   2.98           H   23.4           G   0.15           U   7
Residuals in seconds of arc
201208 703 (2.5+  1.1-)   201208 N88  0.0   0.1+    201209 I52  0.0   0.0
201208 703  0.1+  0.1-    201208 N88  0.2+  0.3+    201209 I52  0.0   0.1-
201208 703 (1.9+  0.0 )   201208 N88  0.0   0.1+    201209 858  0.4+  0.0
201208 I52  0.9-  0.2+    201208 J69 (2.5+  0.3-)   201209 858  0.1+  0.2+
201208 I52 (1.7+  2.1-)   201208 J69  0.0   0.1+    201209 858  0.2+  0.0
201208 I52 (0.0   1.8-)   201208 J69 (2.8+  0.6-)   201209 858  0.1+  0.0
201208 I52  0.2+  0.0     201208 J69  0.3+  0.3-    201209 H21  0.3+  0.2-
201208 I52  0.0   0.0     201208 J69 (3.0+  0.9-)   201209 H21  0.3+  0.0
201208 I52  0.2+  0.1+    201208 J69  0.5+  0.6-    201209 H21  0.4+  0.2-
201208 I52  0.5+  0.0     201208 J69  0.2+  0.3-    201209 718  0.3+  0.3-
201208 V00  0.0   0.1+    201208 J69  0.5-  0.9+    201209 718  0.2-  0.4+
201208 V00  0.3+  0.1+    201208 L04  0.0   0.3+    201209 718  0.9+  0.4-
201208 V00  0.4+  0.1+    201208 L04  0.2+  0.2-    201209 718  0.9+  0.2-
201208 V00  0.1-  0.1+    201208 L04  0.0   0.0     201209 718  0.9-  0.2-
201208 033  0.5-  0.2-    201208 W34  0.3+  0.3-    201209 718  1.0-  0.3-
201208 033  0.4-  0.1-    201209 W34  0.3+  0.1-    201209 900  0.0   0.1+
201208 033  0.5-  0.1-    201209 W34  0.2-  0.1+    201209 900  0.1-  0.3+
201208 N88  0.4+  0.2-    201209 I52  1.0+  0.2+    201209 900  0.0   0.4+
201208 N88  0.3+  0.1-    201209 I52  0.2+  0.1-    201209 900  0.7+  0.3+

Ephemeris:
2020 XN2                 a,e,i = 2.07, 0.61, 4                   q = 0.8040
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 09    17 59 23.2 -13 11 32   0.2484  0.8302    44.1   123.9    25.1
...
2020 11 24    18 45 30.3 -06 10 51   0.1100  0.9096    42.8   132.5    24.4
...
2020 12 02    20 24 04.5 +11 36 51   0.04777 0.9672    65.8   111.7    21.0
...
2020 12 08    01 36 24.9 +36 26 19   0.04246 1.0152   134.3    44.0    18.3
2020 12 09    02 21 48.3 +35 29 29   0.04791 1.0235   142.7    35.7    18.3
2020 12 10    02 56 13.5 +34 01 40   0.05435 1.0318   149.1    29.4    18.4
...
2020 12 16    04 27 29.7 +26 47 20   0.1026  1.0834   164.4    14.1    19.4
...
2020 12 24    05 02 13.1 +22 48 53   0.1768  1.1548   164.4    13.3    20.7
...
2021 01 08    05 26 15.6 +20 24 31   0.3341  1.2926   154.3    19.3    22.6

M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-X87




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