[Iaude] MPEC X107: 2021 XG2 [a=1.52,e=0.41,i=14.2,H=22.2]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 4 10:26:51 EST 2021


M.P.E.C. 2021-X107                             Issued 2021 December 4, 15:25 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

                                    2021 XG2                                    


Observations:
     K21X02G* C2021 12 03.32064101 40 20.76 -31 28 28.5          17.95oVEX107T08
     K21X02G  C2021 12 03.32386601 40 23.64 -31 26 52.6          17.55oVEX107T08
     K21X02G  C2021 12 03.32940101 40 28.48 -31 24 08.5          17.65oVEX107T08
     K21X02G  C2021 12 03.33998901 40 37.90 -31 18 52.0          17.68oVEX107T08
     K21X02G  C2021 12 03.38706701 41 19.46 -30 55 22.7          17.55oVEX107T08
     K21X02G  C2021 12 03.38752801 41 19.85 -30 55 09.4          17.36oVEX107T08
     K21X02G  C2021 12 03.38798801 41 20.22 -30 54 56.2          17.60oVEX107T08
     K21X02G  C2021 12 03.38844801 41 20.63 -30 54 42.0          17.77oVEX107T08
     K21X02G  C2021 12 03.38890801 41 21.09 -30 54 27.8          17.64oVEX107T08
     K21X02G KC2021 12 03.82785201 48 19.74 -27 14 20.6          17.5 GVEX107L01
     K21X02G KC2021 12 03.82864701 48 20.43 -27 13 56.5          17.5 GVEX107L01
     K21X02G KC2021 12 03.82954401 48 21.20 -27 13 29.0          17.3 GVEX107L01
     K21X02G KC2021 12 03.83023901 48 21.78 -27 13 07.8          17.5 GVEX107L01
     K21X02G KC2021 12 03.83113601 48 22.56 -27 12 40.5          17.3 GVEX107L01
     K21X02G KC2021 12 03.90347 01 49 24.30 -26 35 39.3          18.1 GVEX107K83
     K21X02G KC2021 12 03.90828 01 49 28.35 -26 33 09.7          18.2 GVEX107K83
     K21X02G KC2021 12 04.02858301 51 18.22 -25 28 49.0          18.6 VZEX107Y00
     K21X02G KC2021 12 04.03171801 51 20.77 -25 27 12.0          18.4 VZEX107Y00
     K21X02G KC2021 12 04.03485101 51 23.31 -25 25 34.8          18.8 VZEX107Y00
     K21X02G |C2021 12 04.04255 01 51 35.31 -25 21 06.7          17.6 VuEX107807
     K21X02G |C2021 12 04.04612 01 51 38.22 -25 19 16.8          17.6 VuEX107807
     K21X02G |C2021 12 04.04986 01 51 41.25 -25 17 21.2          17.7 VuEX107807
     K21X02G KC2021 12 04.10618 01 52 28.90 -24 51 22.5          17.6 GVEX107W46
     K21X02G KC2021 12 04.10717 01 52 29.67 -24 50 51.7          17.8 GVEX107W46
     K21X02G KC2021 12 04.10815 01 52 30.46 -24 50 21.4          17.0 GVEX107W46
     K21X02G  C2021 12 04.12508 01 52 49.56 -24 41 35.1          18.4 VtEX107V27
     K21X02G  C2021 12 04.13051 01 52 53.94 -24 38 50.0          18.4 VtEX107V27
     K21X02G  C2021 12 04.18922 01 53 41.58 -24 08 29.8          17.7 VtEX107V27
     K21X02G  C2021 12 04.19120 01 53 43.17 -24 07 28.6          18.0 VtEX107V27
     K21X02G  C2021 12 04.20422 01 53 53.66 -24 00 42.1          17.4 VtEX107V27
     K21X02G mC2021 12 04.26724201 54 45.13 -23 27 52.2          17.27GVEX107I52
     K21X02G mC2021 12 04.26740601 54 45.26 -23 27 47.0          17.39GVEX107I52
     K21X02G mC2021 12 04.26757001 54 45.39 -23 27 42.0          17.33GVEX107I52
     K21X02G mC2021 12 04.26773501 54 45.52 -23 27 36.9          17.35GVEX107I52

Observer details:
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
    Horn.  0.61-m f/6.5 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer 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, D. Rankin, R. L.
    Seaman, F. C. Shelly, K. W. Wierzchos.
K83 Beppe Forti Astronomical Observatory, Montelupo.  Observers M. Tombelli,
    A. Mazzanti, E. Venticinque, M. Iozzi, G. Interrante, M. Lombardo.
    Measurers M. Tombelli, F. Bernardi, L. Grazzini.  0.40-m f/8 Ritchey-
    Chretien + CCD.
L01 Visnjan Observatory, Tican.  Observers K. Korlevic, M. Himelreich.
    Measurer K. Korlevic.  1.0-m f/2.9 reflector + CCD.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, J. Tonry, H. Weiland.
    Measurers L. Denneau, J. Tonry, H. Weiland, A. Fitzsimmons, J. Robinson,
    N. Erasmus.  0.5-m reflector + CCD.
V27 North Mesa Observatory, Los Alamos.  Observer B. K. Kendrick.  0.25-m f/6
    reflector + CCD.
W46 Foxfire Village.  Observer J. Haidet.  0.36-m f/6.3 Ritchey-Chretien +
    CCD.
Y00 SONEAR Observatory, Oliveira.  Observer C. Jacques.  0.45-m f/2.9
    reflector + CCD.

Orbital elements:
2021 XG2                                                 Earth MOID = 0.0338 AU
Epoch 2022 Jan. 21.0 TT = JDT 2459600.5                 Veres                   
M  46.94965              (2000.0)            P               Q                  
n   0.52813960     Peri.  301.80112     +0.92795169     -0.28724112             
a   1.5157825      Node    75.82504     +0.36644047     +0.81945805             
e   0.4099602      Incl.   14.17834     -0.06802240     +0.49596477             
P   1.87           H   22.25          G   0.15           U   7                  
Residuals in seconds of arc
211203 T08  0.4-  0.2-    211203 L01  0.2-  0.7+    211204 W46  1.2-  0.6-
211203 T08  0.2+  0.1-    211203 L01  0.0   0.5+    211204 V27  0.2-  0.4+
211203 T08  0.4-  0.5-    211203 K83  0.1-  0.7-    211204 V27  0.9-  2.3-
211203 T08  0.7+  0.7+    211203 K83  0.4-  0.6+    211204 V27  0.4+  0.1-
211203 T08  0.3+  0.7+    211204 Y00  0.1+  0.3+    211204 V27  0.3+  0.4-
211203 T08  0.2+  0.1+    211204 Y00  0.2+  0.3+    211204 V27  0.1+  1.2+
211203 T08  0.3-  0.6-    211204 Y00  0.0   0.4+    211204 I52  0.1+  0.1+
211203 T08  0.4-  0.3-    211204 807  0.2+  0.0     211204 I52  0.1+  0.1+
211203 T08  0.3+  0.2+    211204 807  0.1+  0.1-    211204 I52  0.0   0.1-
211203 L01  0.3-  0.8+    211204 807  0.2-  0.2+    211204 I52  0.1+  0.1-
211203 L01  0.1-  0.6+    211204 W46  0.6-  0.6-
211203 L01  0.0   0.7+    211204 W46  1.1-  0.5-

Ephemeris:
2021 XG2                 a,e,i = 1.52, 0.41, 14                  q = 0.8944
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2021 11 04    17 58 50.1 -65 49 44   0.2246  0.9031    60.6   106.9    22.8
...
2021 11 19    20 12 08.1 -70 40 20   0.1224  0.9427    64.8   108.5    21.6
...
2021 11 27    23 20 34.4 -64 39 16   0.07202 0.9746    78.2    97.7    20.0
...
2021 12 03    01 35 05.9 -34 02 39   0.04740 1.0025   109.2    68.2    18.0
2021 12 04    01 50 54.3 -25 43 41   0.04621 1.0074   116.8    60.8    17.8
2021 12 05    02 05 01.8 -17 04 48   0.04619 1.0124   124.4    53.4    17.6
...
2021 12 11    03 04 01.1 +22 28 29   0.06712 1.0438   150.7    27.5    17.7
...
2021 12 19    03 45 58.6 +40 59 33   0.1199  1.0887   149.2    27.6    19.1
...
2022 01 03    04 28 12.6 +49 07 25   0.2387  1.1790   141.3    31.5    20.8

M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-X107




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