• MPC Preparation (Info)

  • MPEC 2021-L54 : 2021 LB1

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    M.P.E.C. 2021-L54                                  Issued 2021 June 5, 00:25 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                    2021 LB1                                 
    
    
    Observations:
         K21L01B* C2021 06 03.33876615 47 32.32 +17 45 58.1          20.49GVEL054G96
         K21L01B  C2021 06 03.34917015 47 49.03 +17 44 50.3          20.63GVEL054G96
         K21L01B  C2021 06 03.35435515 47 57.22 +17 44 17.0          20.49GVEL054G96
         K21L01B KC2021 06 03.37759215 48 34.48 +17 41 44.6          20.01GVEL054I52
         K21L01B KC2021 06 03.37910515 48 36.93 +17 41 34.2          20.06GVEL054I52
         K21L01B KC2021 06 03.38062515 48 39.35 +17 41 24.8          19.92GVEL054I52
         K21L01B KC2021 06 03.38214415 48 41.78 +17 41 15.0          20.41GVEL054I52
         K21L01B KC2021 06 04.32458516 11 43.98 +16 13 13.0          20.69GVEL054G96
         K21L01B KC2021 06 04.32551116 11 44.98 +16 13 08.1          20.56GVEL054G96
         K21L01B KC2021 06 04.32643816 11 46.03 +16 13 03.1          20.58GVEL054G96
         K21L01B IC2021 06 04.87160516 22 14.93 +15 28 10.9          21.4 GVEL054L01
         K21L01B IC2021 06 04.87782116 22 20.85 +15 27 45.2          21.3 GVEL054L01
         K21L01B KC2021 06 04.87988616 22 22.79 +15 27 35.8          21.2 GVEL054L01
         K21L01B pC2021 06 04.88417816 22 26.80 +15 27 17.2          21.2 GVEL054L01
         K21L01B KC2021 06 04.88727616 22 29.72 +15 27 02.8          21.2 GVEL054L01
         K21L01B KC2021 06 04.91072016 22 55.30 +15 25 18.1                VEL054I93
         K21L01B KC2021 06 04.92832216 23 11.67 +15 24 02.9          20.6 GVEL054I93
    
    Observer details:
    G96 Mt. Lemmon Survey.  Observers T. A. Pruyne, G. J. Leonard.  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.  1.5-m reflector +
        10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  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.  1.0-m
        reflector + CCD.
    I93 St Pardon de Conques.  Observer F. Losse.  0.40-m f/3.7 reflector + CCD.
    L01 Visnjan Observatory, Tican.  Observers K. Korlevic, I. Lyon.  Measurer K.
        Korlevic.  1.0-m f/2.9 reflector + CCD.
    
    Orbital elements:
    2021 LB1                                                 Earth MOID = 0.0029 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres                   
    M 281.45941              (2000.0)            P               Q                  
    n   0.64401438     Peri.  311.82779     -0.94400848     +0.31043872             
    a   1.3280232      Node   246.53246     -0.25493204     -0.90126598             
    e   0.2977897      Incl.    6.99409     -0.20942218     -0.30223738             
    P   1.53           H   27.37          G   0.15           U   8                  
    Residuals in seconds of arc
    210603 G96  0.6+  0.3-    210603 I52  0.0   0.5+    210604 L01  0.2+  0.8+
    210603 G96  0.8+  0.4-    210604 G96  0.1+  0.1-    210604 L01  0.1-  1.0+
    210603 G96  0.9-  0.1+    210604 G96  0.2-  0.0     210604 L01  0.0   0.2+
    210603 I52  0.3-  0.1+    210604 G96  0.0   0.2-    210604 I93  0.2+  0.3-
    210603 I52  0.1+  0.3-    210604 L01  0.4-  0.3-    210604 I93  0.5+  0.9+
    210603 I52  0.0   0.3+    210604 L01  0.3+  1.2+
    
    Ephemeris:
    2021 LB1                 a,e,i = 1.33, 0.30, 7                   q = 0.9326
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 05 06    06 19 07.7 -03 26 18   0.1121  0.9488    54.9   119.5    27.3
    ...
    2021 05 21    07 02 58.0 -00 43 12   0.04480 0.9848    51.4   126.5    26.0
    ...
    2021 05 29    09 55 17.6 +15 01 54   0.01412 1.0107    78.2   101.0    21.8
    ...
    2021 06 04    16 04 45.6 +16 43 33   0.02377 1.0327   139.5    39.6    20.9
    2021 06 05    16 24 18.1 +15 21 24   0.02775 1.0365   141.5    37.5    21.2
    2021 06 06    16 38 41.6 +14 14 52   0.03188 1.0404   142.9    36.0    21.4
    ...
    2021 06 12    17 19 18.3 +10 27 29   0.05826 1.0645   146.4    31.9    22.7
    ...
    2021 06 20    17 37 06.4 +07 54 48   0.09559 1.0987   148.4    29.0    23.7
    ...
    2021 07 05    17 50 07.0 +04 21 05   0.1721  1.1668   148.4    27.2    25.1
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-L54
    


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