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  • MPEC 2000-J03 : 1998 XA5

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    M.P.E.C. 2000-J03                                Issued 2000 May 1, 18:01 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  They are published
       on behalf of Commission 20 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
    
                 BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
              URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714
    
                                       1998 XA5
    
                               Revision to MPEC 1998-X40
    
    Observations:
         J98X05A  C1997 01 13.25244 02 15 47.55 +11 56 28.9          17.9 R      566
         J98X05A  C1997 01 13.26087 02 15 49.19 +11 55 48.0          17.8 R      566
         J98X05A  C1997 01 13.26927 02 15 50.94 +11 55 07.1          17.7 R      566
         J98X05A  C1998 12 24.00034707 29 44.64 +21 35 21.1                      910
         J98X05A  C1998 12 24.00239607 29 44.06 +21 34 52.4                      910
         J98X05A  C1998 12 24.00428207 29 43.51 +21 34 26.8          14.9 R      910
         J98X05A  C1998 12 24.00616907 29 42.99 +21 34 00.9                      910
         J98X05A  C1998 12 24.00805507 29 42.47 +21 33 35.2                      910
         J98X05A  C1998 12 24.00994207 29 41.94 +21 33 09.6                      910
         J98X05A  C1998 12 24.01182807 29 41.42 +21 32 43.2                      910
         J98X05A  C1998 12 24.01371507 29 40.89 +21 32 17.8                      910
         J98X05A  C1998 12 24.01560207 29 40.36 +21 31 52.0                      910
         J98X05A  C1998 12 24.01748807 29 39.84 +21 31 26.4                      910
    
    Observer details:
    566 Haleakala-NEAT/GEODSS.  Observers E. F. Helin, S. Pravdo, K. J. Lawrence,
        D. L. Rabinowitz for the NEAT team.  Measurer DANEOPS (A. Gnadig).  1.0-m
        f/2.2 GEODSS telescope + CCD.
    910 Caussols-ODAS.  Observers A. Maury, D. Albanese, G. Hahn, M. Hoffmann.
        Measurers A. Maury, G. Hahn.  0.9-m Schmidt + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    970113 566 0.07- 0.06+    981224 910  0.1+  0.1-    MPC 34598   +0.049 day
    
    Orbital elements:
    1998 XA5
    Epoch 2000 Feb. 26.0 TT = JDT 2451600.5                 Williams
    M 201.26012              (2000.0)            P               Q
    n   0.50662503     Peri.  211.15009     -0.50212381     -0.68717988
    a   1.5583977      Node   274.25868     +0.86139429     -0.34363198
    e   0.3067983      Incl.   31.76811     +0.07662612     -0.64007881
    P   1.95           H   18.8           G   0.15           U   1
    Residuals in seconds of arc
    970113 566  0.1-  0.6+    981220 071  0.0   0.1-    981227 428  0.4+  0.4-
    970113 566  0.0   0.7+    981220 071  0.2+  0.3-    981228 402  0.7-  0.8-
    970113 566  1.7+  0.6+    981220 071  0.2+  0.6+    981228 402  0.7-  0.7-
    981212 704  0.6-  0.3+    981220 071  0.6+  0.8+    981228 402  0.8-  1.1-
    981212 704  0.1-  0.9+    981220 071  0.3+  0.2-    981228 151  1.2-  1.3-
    981212 704  0.1-  1.2+    981221 426  0.4+  0.5-    981228 151 (4.6-  2.0+)
    981212 704  0.2+  1.3+    981221 426  0.2+  0.2-    981228 151  1.4-  0.4-
    981212 704  0.3+  1.2+    981221 426  0.3+  0.5+    981228 151  0.6-  1.2-
    981213 761  0.0   0.0     981221 426  0.4+  0.4-    981228 151  1.7-  0.3-
    981213 761  1.0-  1.5+    981221 151  0.2+  0.5+    981229 540  0.0   0.0
    981213 711  0.3-  0.2+    981221 151  0.1-  0.5+    981229 540  0.2-  0.1+
    981213 711  0.3-  0.1+    981221 151  0.3+  0.1-    981229 540  0.6-  0.5+
    981213 711  0.4-  0.1+    981221 151 (1.8+  2.1-)   981230 046  0.2-  0.9+
    981213 327  0.6-  0.2-    981223 670  0.1+  1.0+    981230 046  0.1-  0.3+
    981213 327  0.4-  0.2-    981223 670  0.6-  0.6+    981230 046  0.1-  0.3+
    981213 327  0.5-  0.1-    981223 670  0.0   0.5+    981230 046  0.3-  0.7+
    981213 327  0.4-  0.2-    981223 670  0.4+  0.1+    990101 860  0.3-  1.0+
    981213 046  1.4-  0.3-    981223 587  0.8-  1.8-    990101 860  0.0   1.2-
    981213 046  0.6+  0.2-    981223 587  0.4+  0.6+    990101 860 (0.3-  3.5-)
    981213 046  0.5-  0.1-    981223 540  0.7+  0.7+    990104 422  0.1-  0.4+
    981213 046  1.2+  0.5-    981223 540  0.8+  0.2+    990104 422  0.1-  0.7+
    981213 046  0.5-  0.4-    981223 540  0.3+  0.5+    990104 422  0.1-  1.0+
    981213 106  0.9-  1.0-    981223 540  0.4+  0.6+    990104 587  0.2+  1.9+
    981213 106  0.9-  0.9-    981223 540  0.9+  0.9+    990104 587  1.2-  1.3-
    981213 106  0.5-  1.7-    981224 910  0.3+  0.3+    990105 587  0.3+  0.1+
    981213 106  0.4-  1.1-    981224 910  0.2+  0.4-    990105 587  0.0   0.1-
    981213 106  0.2-  1.2-    981224 910  0.1-  0.2-    990107 428  0.7-  0.6+
    981213 106  1.0-  1.3-    981224 910  0.0   0.3-    990107 428  0.6-  1.1+
    981214 658  0.5-  0.2-    981224 910  0.0   0.2-    990107 428  0.5-  0.8+
    981214 711  0.3-  0.3-    981224 910  0.0   0.0     990108 428  1.1-  0.4-
    981214 658  0.4-  0.1-    981224 910  0.1+  0.6-    990108 428 (0.3-  2.3+)
    981214 658  0.3-  0.4-    981224 910  0.0   0.2-    990108 428  1.0-  0.1+
    981214 711  0.3-  0.2-    981224 910  0.0   0.2-    990108 428  1.3-  0.1-
    981214 711 (1.3+  2.1+)   981224 910  0.1+  0.0     990108 428  0.9-  0.3+
    981214 704 (0.7+  2.3-)   981224 104  0.7+  1.1-    990110 422  0.4-  0.5-
    981214 704  1.2-  1.0+    981224 104  0.6+  0.2-    990110 422  0.7-  0.5-
    981214 704  0.2-  0.0     981224 104  0.3+  0.8-    990110 422  0.5-  0.8-
    981214 704  0.2+  0.7+    981224 104  0.2-  0.7-    990110 428  0.1+  0.8-
    981214 704  0.1-  1.3+    981224 121  0.1+  0.4-    990110 428  0.2-  0.9-
    981214 151  0.0   0.8-    981224 121  0.3+  0.1-    990110 428  0.0   1.0-
    981214 151  0.8+  0.2+    981224 121  0.4+  0.1-    990110 428  0.4+  0.5-
    981214 151  0.5+  0.0     981224 104  0.2-  1.4-    990110 428  0.5+  0.4-
    981214 151  0.3+  0.5-    981224 104  0.1+  1.5-    990111 428  0.1-  0.7-
    981215 151  0.5+  0.2-    981224 104  0.4+  1.3-    990111 428  0.0   0.9-
    981215 151  0.2-  0.2+    981225 428  0.3+  1.3+    990112 422  0.7-  0.2-
    981215 151  0.7+  0.1-    981225 428  0.1+  0.8+    990113 428  1.1-  0.2+
    981215 151  1.1-  1.2+    981225 428  0.3+  0.9+    990113 428  0.6-  0.3+
    981215 540 (2.6+  1.5+)   981225 428  0.4+  0.4+    990113 428  1.2-  0.6-
    981215 540 (2.2-  0.7+)   981225 428  0.3+  0.5+    990115 428  1.0-  0.5-
    981215 540 (2.7+  1.9+)   981225 428  0.4+  0.9+    990116 428  0.3+  0.1+
    981215 540 (2.7+  0.8-)   981225 428  0.1+  0.6+    990116 428  0.0   0.6-
    981216 360  0.3+  0.1+    981225 540  0.5+  0.5+    990116 428  0.3-  0.1-
    981216 360  0.3+  0.1+    981225 540  0.0   0.5-    990118 428  0.4+  0.8+
    981216 360  0.3+  0.1+    981225 540  0.4+  0.8+    990119 428  0.1-  0.0
    981218 402  0.1-  1.1-    981225 540  0.7+  0.9+    990119 428  0.3+  0.1+
    981218 402  0.1-  1.2-    981226 151  0.2-  1.1+    990119 428  0.3-  0.3+
    981218 402  0.1-  1.3-    981226 151  0.4+  0.4+    990126 428  0.5-  0.6-
    981218 587  1.2+  0.7-    981226 151  0.3+  0.0     990126 428  0.2+  0.2-
    981218 587  1.0+  0.5-    981226 540 (2.7-  1.2+)   990206 428  1.4+  0.1+
    981218 151  0.1-  1.1-    981226 540  0.4-  0.7-    990206 428  1.3+  0.3+
    981218 587  1.2+  0.5-    981226 620  0.3+  0.3+    990206 428  1.2+  1.0-
    981218 151  0.4-  0.3-    981226 620  0.2+  0.3+    990213 428  1.0+  0.8-
    981218 151  0.6+  0.0     981226 620  0.2+  0.5+    990214 428  1.1+  0.6-
    981218 151  1.0+  0.8-    981226 620  0.3+  1.1+    990214 428  1.2+  1.1+
    981219 143  0.9+  1.4+    981227 428  0.7+  0.1-    990413 422  1.1+  0.2+
    981219 143  0.9+  1.7+    981227 428  0.3+  0.2+    990413 422  0.8+  0.7+
    981219 143  0.7+  0.9+    981227 428  0.8+  0.2+    990413 422  0.9+  0.2+
    
    Gareth V. Williams           (C) Copyright 2000 MPC           M.P.E.C. 2000-J03
    

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