• MPC Preparation (Info)

  • MPEC 2021-G34 : 2021 GD1

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    M.P.E.C. 2021-G34                                 Issued 2021 April 4, 21:22 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                    2021 GD1                                 
    
    
    Observations:
         K21G01D  C2021 04 01.26356 10 42 19.80 -28 17 40.4          19.7 GVEG034703
         K21G01D  C2021 04 01.28008 10 42 14.58 -28 14 52.9          18.8 GVEG034703
         K21G01D* C2021 04 03.40655110 30 35.92 -20 42 18.4          18.70cVEG034T08
         K21G01D  C2021 04 03.41072510 30 34.19 -20 41 10.7          18.95cVEG034T08
         K21G01D  C2021 04 03.41587210 30 31.99 -20 39 47.1          18.78cVEG034T08
         K21G01D  C2021 04 03.43146110 30 25.44 -20 35 33.2          18.50cVEG034T08
         K21G01D KC2021 04 03.68692 10 28 48.15 -19 25 01.5          17.7 GVEG034N82
         K21G01D KC2021 04 03.69016 10 28 46.74 -19 24 06.3          18.0 GVEG034N82
         K21G01D KC2021 04 03.69340 10 28 45.32 -19 23 09.9          17.9 GVEG034N82
         K21G01D KC2021 04 03.81270610 27 59.50 -18 48 19.4          18.5 GVEG034L01
         K21G01D KC2021 04 03.81452910 27 58.66 -18 47 47.5          18.5 GVEG034L01
         K21G01D KC2021 04 03.81627810 27 57.91 -18 47 16.8          18.3 GVEG034L01
         K21G01D KC2021 04 03.81802410 27 57.16 -18 46 46.2          18.4 GVEG034L01
         K21G01D KC2021 04 03.82063210 27 56.02 -18 45 59.4          18.5 GVEG034L01
         K21G01D KC2021 04 03.86076510 27 38.23 -18 34 02.9          18.6 GVEG034595
         K21G01D KC2021 04 03.86683510 27 35.54 -18 32 14.6          18.3 GVEG034595
         K21G01D KC2021 04 03.87127810 27 33.86 -18 30 52.2          18.4 GVEG034K63
         K21G01D KC2021 04 03.87290910 27 32.84 -18 30 25.4          18.3 GVEG034595
         K21G01D KC2021 04 03.87675 10 27 32.44 -18 29 14.9          18.4 GVEG034958
         K21G01D KC2021 04 03.87709710 27 31.26 -18 29 08.6          18.1 GVEG034K63
         K21G01D KC2021 04 03.87899310 27 30.07 -18 28 34.9          18.4 GVEG034595
         K21G01D KC2021 04 03.88309 10 27 29.65 -18 27 21.2          18.2 GVEG034958
         K21G01D KC2021 04 03.88910 10 27 26.91 -18 25 32.2          18.6 GVEG034958
         K21G01D KC2021 04 03.92931610 27 08.81 -18 13 21.0          17.5 GVEG034I93
         K21G01D KC2021 04 03.93241210 27 07.38 -18 12 24.8          18.0 GVEG034I93
         K21G01D KC2021 04 03.93559510 27 05.95 -18 11 26.7          18.2 GVEG034I93
         K21G01D KC2021 04 03.93745710 27 04.15 -18 10 50.1          18.0 GVEG034104
         K21G01D KC2021 04 03.94340610 27 01.49 -18 09 01.3          17.9 GVEG034104
         K21G01D KC2021 04 03.94935210 26 58.77 -18 07 12.4                VEG034104
         K21G01D KC2021 04 03.95818 10 27 01.67 -18 02 26.9          18.4 VqEG034X31
         K21G01D KC2021 04 03.96066 10 27 00.56 -18 01 42.3          18.9 VqEG034X31
         K21G01D KC2021 04 03.96315 10 26 59.40 -18 00 56.5          18.5 VqEG034X31
         K21G01D KC2021 04 03.99158010 26 45.07 -17 52 37.9          18.6 GXEG034Y00
         K21G01D KC2021 04 03.99361410 26 44.15 -17 52 00.0          18.3 GXEG034Y00
         K21G01D KC2021 04 03.99566510 26 43.16 -17 51 20.6          19.1 GXEG034Y00
         K21G01D KC2021 04 04.14154 10 25 40.44 -17 07 00.9          18.5 RqEG034734
         K21G01D KC2021 04 04.14469 10 25 38.95 -17 05 59.8          18.3 RqEG034734
         K21G01D KC2021 04 04.14784 10 25 37.46 -17 04 59.8          18.5 RqEG034734
         K21G01D KC2021 04 04.15099 10 25 35.96 -17 03 57.9          18.4 RqEG034734
         K21G01D  C2021 04 04.35006710 24 06.78 -15 58 04.2          18.64cVEG034T08
         K21G01D  C2021 04 04.35330810 24 05.18 -15 56 57.9          18.63cVEG034T08
         K21G01D  C2021 04 04.35931010 24 02.21 -15 54 57.1          18.79cVEG034T08
         K21G01D  C2021 04 04.37083010 23 56.51 -15 51 03.0          18.76cVEG034T08
         K21G01D 1C2021 04 04.77836310 20 50.74 -13 26 26.3                VEG034246
         K21G01D 1C2021 04 04.77886310 20 50.46 -13 26 14.5                VEG034246
         K21G01D 1C2021 04 04.77902410 20 50.40 -13 26 10.3                VEG034246
         K21G01D 1C2021 04 04.77918310 20 50.30 -13 26 06.8                VEG034246
         K21G01D 1C2021 04 04.77933210 20 50.23 -13 26 03.6                VEG034246
         K21G01D 1C2021 04 04.77945610 20 50.16 -13 26 01.6          18.3 GVEG034246
         K21G01D KC2021 04 04.78467010 20 47.51 -13 24 04.6          17.3 RVEG034K61
         K21G01D KC2021 04 04.78518810 20 47.22 -13 23 53.1          16.8 RVEG034K61
         K21G01D KC2021 04 04.78613610 20 46.74 -13 23 31.2          17.5 RVEG034K61
         K21G01D KC2021 04 04.78700110 20 46.30 -13 23 11.8          17.2 RVEG034K61
         K21G01D KC2021 04 04.79245810 20 42.35 -13 21 10.0          18.0 GVEG034L18
         K21G01D KC2021 04 04.79327610 20 41.95 -13 20 51.7          18.1 GVEG034L18
         K21G01D KC2021 04 04.79409810 20 41.54 -13 20 33.6          17.7 GVEG034L18
         K21G01D KC2021 04 04.79492310 20 41.07 -13 20 14.4          18.2 GVEG034L18
         K21G01D KC2021 04 04.79576010 20 40.67 -13 19 55.6          17.8 GVEG034L18
         K21G01D KC2021 04 04.80000 10 20 39.87 -13 18 20.0          18.2 GVEG034K74
         K21G01D KC2021 04 04.80799 10 20 35.76 -13 15 19.8          18.4 GVEG034K74
         K21G01D KC2021 04 04.81511 10 20 32.07 -13 12 38.5          18.4 GVEG034K74
         K21G01D KC2021 04 04.81542210 20 31.56 -13 12 32.9          17.9 GVEG034G34
         K21G01D KC2021 04 04.81973210 20 29.33 -13 10 54.9          18.3 GVEG034G34
         K21G01D KC2021 04 04.82128 10 20 28.86 -13 10 18.5          18.3 GVEG034K74
         K21G01D KC2021 04 04.82404110 20 27.08 -13 09 18.4          18.3 GVEG034G34
         K21G01D KC2021 04 04.82835310 20 24.87 -13 07 39.6          17.6 GVEG034G34
         K21G01D KC2021 04 04.83489910 20 22.71 -13 05 09.9          18.4 GVEG034J95
         K21G01D KC2021 04 04.83713310 20 21.56 -13 04 19.3          18.5 GVEG034J95
         K21G01D KC2021 04 04.83928 10 20 19.53 -13 03 23.4          17.9 RaEG034233
         K21G01D KC2021 04 04.84151210 20 19.30 -13 02 38.9          18.1 GVEG034J69
         K21G01D KC2021 04 04.84379 10 20 17.19 -13 01 41.3          18.1 RaEG034233
         K21G01D KC2021 04 04.84556610 20 17.20 -13 01 06.6          18.1 GVEG034J69
         K21G01D KC2021 04 04.84578 10 20 16.11 -13 00 54.6          17.1 GVEG034G17
         K21G01D KC2021 04 04.84667 10 20 16.69 -13 00 31.1          18.2 RqEG034B74
         K21G01D KC2021 04 04.84833 10 20 14.83 -12 59 57.6          17.7 RaEG034233
         K21G01D KC2021 04 04.84961510 20 15.04 -12 59 33.8          17.4 GVEG034J69
         K21G01D KC2021 04 04.85113 10 20 14.39 -12 58 48.5          18.2 RqEG034B74
         K21G01D KC2021 04 04.85215 10 20 12.73 -12 58 29.7          17.3 GVEG034G17
         K21G01D KC2021 04 04.85395 10 20 12.93 -12 57 43.9          18.4 RqEG034B74
         K21G01D KC2021 04 04.85852 10 20 09.39 -12 56 04.1          17.5 GVEG034G17
         K21G01D KC2021 04 04.86263010 20 08.28 -12 54 37.1          18.2 GVEG034J95
         K21G01D KC2021 04 04.86670210 20 06.19 -12 53 03.8          18.2 GVEG034J95
    
    Observer details:
    104 San Marcello Pistoiese.  Observers P. Bacci, M. Maestripieri.  Measurers
        P. Bacci, L. Tesi, G. Fagioli.  0.60-m reflector + CCD.
    233 Sauro Donati Astronomical Observatory, San Vito.  Observers S. Donati, F.
        Biagini.  Measurer S. Donati.  0.30-m f/9 Schmidt-Cassegrain + CCD.
    246 Klet Observatory-KLENOT.  Observers M. Tichy, J. Ticha, M. Honkova.
        Measurer M. Tichy.  1.06-m f/2.7 reflector + 2048x2048 CCD.
    595 Farra d'Isonzo.  Observer E. Pettarin.  0.40-m f/5.15 reflector + CCD.
    703 Catalina Sky Survey.  Observer G. J. Leonard.  Measurers B. Gray, D.
        Rankin, F. C. Shelly.  0.68-m Schmidt + 10K CCD.
    734 Farpoint Observatory, Eskridge.  Observers G. Hug, D. Cromer, D. Goodin,
        R. Valentine.  Measurer D. Cromer.  0.7-m reflector + CCD.
    958 Observatoire de Dax.  Observer P. Dupouy.  0.32-m f/4.1 Schmidt-
        Cassegrain.
    B74 Santa Maria de Montmagastrell.  Observer J. M. Bosch.  0.40-m f/10
        Schmidt-Cassegrain + CCD.
    G17 BAS Observatory, Scandicci.  Observer L. Grazzini.  0.20-m f/10 Schmidt-
        Cassegrain + CCD + f/6.3 focal reducer.
    G34 Oberfrauendorf.  Observer T. Felber.  0.35-m f/6.3 Schmidt-Cassegrain +
        CCD.
    I93 St Pardon de Conques.  Observer F. Losse.  0.40-m f/3.7 reflector + CCD.
    J69 North Observatory, Clanfield.  Observer D. Briggs.  0.41-m f/4.5 Newtonian
        reflector + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
        + CCD.
    K61 Rokycany Observatory.  Observer M. Adamovsky.  0.51-m f/6.8 reflector +
        CCD.
    K63 G. Pascoli Observatory, Castelvecchio Pascoli.  Observer R. Bacci.  0.41-m
        f/3.2 Newtonian reflector + CCD.
    K74 Muensterschwarzach Observatory, Schwarzach.  Observer C. Gerhard.  0.30-m
        f/3.75 Newtonian reflector + CCD.
    L01 Visnjan Observatory, Tican.  Observers K. Korlevic, D. Pujagic, V. Dobos.
        Measurers D. Pujagic, K. Korlevic.  1.0-m f/2.9 reflector + CCD.
    L18 QOS Observatory, Zalistci.  Observers Y. V. Shevchuk, O. V. Kravchenko.
        Measurer A. M. Kozhukhov.  0.50-m f/3.8 reflector + CCD.
    N82 Multa Observatory.  Observer L. Elenin.  0.4-m f/1.25 reflector + CCD.
    T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, J. Tonry, A. Heinze, H.
        Weiland.  Measurers L. Denneau, J. Tonry, A. Heinze, H. Weiland, A.
        Fitzsimmons, J. Robinson, N. Erasmus.  0.5-m reflector + CCD.
    X31 Galileo Galilei Observatory, Oro Verde.  Observer C. Fornari.  0.40-m f/8
        Ritchey-Chretien + CCD.
    Y00 SONEAR Observatory, Oliveira.  Observers C. Jacques, E. Pimentel, J.
        Barros.  Measurer C. Jacques.  0.28-m f/2.2 astrograph + CCD.
    
    Orbital elements:
    2021 GD1                                                 Earth MOID = 0.0246 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
    M 298.09382              (2000.0)            P               Q                  
    n   0.38749292     Peri.   70.33316     -0.10959332     +0.98449529             
    a   1.8633461      Node   195.43158     -0.98898257     -0.09420751             
    e   0.5798954      Incl.   30.97887     +0.09951275     +0.14796611             
    P   2.54           H   22.37          G   0.15           U   8                  
    Residuals in seconds of arc
    210401 703  0.0+  0.7-    210403 104  0.4+  0.3+    210404 L18  0.2+  0.2+
    210401 703  0.9-  0.6+    210403 104  0.6+  0.2-    210404 L18  0.5+  0.3-
    210403 T08  0.0+  0.1-    210403 104  0.1-  0.7-    210404 L18  0.2-  0.5+
    210403 T08  0.4+  0.1-    210403 X31  0.2+  0.8+    210404 L18  0.3+  0.4+
    210403 T08  0.1+  0.0+    210403 X31  0.2+  0.0-    210404 K74  0.0+  0.1-
    210403 T08  0.1+  0.1+    210403 X31  0.3-  0.3+    210404 K74  0.2+  0.2-
    210403 N82  0.3-  0.6+    210403 Y00  0.7+  0.9-    210404 K74  0.1+  0.1+
    210403 N82  0.5-  0.0-    210403 Y00  1.1+  0.7-    210404 G34  0.2-  0.1-
    210403 N82  0.9-  0.5+    210403 Y00  0.5+  0.7+    210404 G34  0.1-  0.2+
    210403 L01  0.1-  0.2-    210404 734  0.1+  0.1+    210404 K74  0.1-  0.3+
    210403 L01  0.7-  0.5-    210404 734  0.1-  0.9+    210404 G34  0.3-  1.0-
    210403 L01  0.4-  0.8-    210404 734  0.2-  0.3+    210404 G34  0.1+  0.2-
    210403 L01  0.1-  1.1-    210404 734 (0.5-  1.7+)   210404 J95  0.2-  0.0+
    210403 L01  0.1+  0.6-    210404 T08  0.1-  0.1-    210404 J95  0.2-  0.3-
    210403 595  0.0-  0.2+    210404 T08  0.1-  0.5+    210404 233  0.3-  0.1+
    210403 595  0.1+  0.3-    210404 T08  0.2-  0.4-    210404 J69  0.2+  0.0+
    210403 K63  0.4+  0.7+    210404 T08  0.2-  0.6-    210404 233  0.2+  0.6-
    210403 K63  0.4+  0.7+    210404 246  0.5+  0.4-    210404 J69  0.3+  0.1-
    210403 595  0.2+  0.4-    210404 246  0.1+  0.1+    210404 G17  0.3+  0.5+
    210403 958 (0.1-  1.3-)   210404 246  0.5+  0.7+    210404 B74  0.1+  0.6+
    210403 K63  0.4+  0.5-    210404 246  0.2+  0.7+    210404 233 (0.6+  0.5-)
    210403 K63  0.4+  0.5-    210404 246  0.3+  0.5+    210404 J69  0.4-  0.3+
    210403 595  0.6-  0.4+    210404 246  0.2+  0.2-    210404 B74  0.8+  1.4+
    210403 958 (0.5+  1.8-)   210404 K61  0.4+  0.5+    210404 G17  0.1-  0.1-
    210403 958 (0.2-  1.2-)   210404 K61  0.0+  0.4+    210404 B74 (1.2+  1.6+)
    210403 I93  0.5+  0.1+    210404 K61  0.1+  1.0+    210404 G17  0.2+  0.3-
    210403 I93  0.0+  0.3-    210404 K61  0.2+  1.0+    210404 J95  0.4-  0.2-
    210403 I93  0.1+  0.4-    210404 L18  0.1-  0.4+    210404 J95  0.1+  0.2-
    
    Ephemeris:
    2021 GD1                 a,e,i = 1.86, 0.58, 31                  q = 0.7828
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 03 05    11 29 24.7 -43 49 08   0.4605  1.3336   129.6    34.9    22.8
    ...
    2021 03 20    11 14 47.3 -42 07 02   0.2617  1.1993   136.5    34.8    21.3
    ...
    2021 03 28    10 57 58.1 -36 20 09   0.1618  1.1280   140.8    34.0    20.1
    ...
    2021 04 03    10 33 09.9 -22 25 36   0.09283 1.0754   143.1    34.0    18.8
    2021 04 04    10 26 40.3 -17 50 21   0.08265 1.0668   142.4    34.9    18.5
    2021 04 05    10 18 59.3 -11 59 44   0.07324 1.0582   140.9    36.6    18.3
    ...
    2021 04 11    08 30 27.0 +53 23 47   0.05641 1.0076    94.0    82.8    19.0
    ...
    2021 04 19    01 54 11.8 +70 36 27   0.1326  0.9441    59.5   113.5    22.2
    ...
    2021 05 04    00 23 42.8 +59 23 42   0.3113  0.8451    50.5   113.0    23.8
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-G34
    


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