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IAU Minor Planet Center

Minor Planet Center

MPEC 2000-O40: 1998 SF35

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M.P.E.C. 2000-O40                                Issued 2000 July 31, 20:48 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 SF35

                           Revision to MPEC 1998-S40

Observations:
     J98S35F 5C2000 07 06.27609 21 56 19.39 +40 53 42.9                      695
     J98S35F 5C2000 07 06.29435 21 56 19.09 +40 53 58.8                      695
     J98S35F 5C2000 07 07.33148 21 55 59.49 +41 09 54.5                      695
     J98S35F 5C2000 07 07.33383 21 55 59.34 +41 09 58.5                      695

Observer details:
695 Kitt Peak.  Observer C. W. Hergenrother, S. M. Larson.  2.3-m reflector
    + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
000706 695 91.0-  1.6-    000707 695 92.9-  1.0-    MPC 33355   +0.068 day

Orbital elements:
1998 SF35
Epoch 2000 Sept. 13.0 TT = JDT 2451800.5                Spahr
M 250.82583              (2000.0)            P               Q
n   0.45053453     Peri.  253.70261     -0.27139140     -0.89246073
a   1.6851969      Node   218.69900     +0.94265882     -0.32204514
e   0.2735895      Incl.   35.19545     -0.19427057     -0.31591262
P   2.19           H   17.7           G   0.15           U   3
Residuals in seconds of arc
980924 704  0.6+  1.2+    980927 557  0.7+  0.0     981025 402  0.4-  0.5-
980924 704 (2.8+  0.3+)   980927 557  0.2-  0.1-    981025 402  0.9-  0.4-
980924 704  1.4+  0.7+    980928 658  0.3-  0.2-    981028 587  0.0   0.9+
980924 704 (3.7-  0.2-)   980928 658  0.2-  0.4-    981028 587  0.2-  0.1-
980924 046  0.1+  0.4-    980928 658  0.1-  0.3-    981107 118  1.3-  1.3-
980924 046  0.2+  0.0     980930 046  0.2-  0.8-    981107 118  1.9-  1.8-
980924 046  0.4+  0.2-    980930 046  0.3+  0.0     981110 360  0.3+  0.5+
980924 046  0.3+  0.0     980930 046  0.3+  0.8-    981110 360  0.0   0.0
980925 557  0.4+  0.5+    981002 402  0.3-  0.3+    981110 360  0.1+  0.2+
980925 557  1.2+  0.8+    981002 402  0.8-  0.3-    981124 557  0.1+  1.5+
980925 557  0.8+  2.0+    981002 402  0.8+  1.4-    981124 557  0.5-  0.9+
980925 046  0.8+  0.6+    981017 557  0.2+  0.1-    981126 402  0.4+  0.2-
980925 046  0.2-  0.7+    981017 557  0.3+  0.4-    981126 402  0.8+  0.4-
980925 557  0.2+  0.2+    981019 658  0.3+  0.3-    981126 402  1.1+  0.0
980925 557  0.3-  0.0     981019 658  0.1+  0.3+    000706 695  0.2+  0.1+
980925 557  0.0   0.5+    981019 658  0.2+  0.4+    000706 695  0.7+  1.3-
980927 658  0.8-  0.3+    981023 118  0.2-  0.1+    000707 695  0.1+  0.8-
980927 658  0.3-  0.1-    981023 118  0.6-  0.1+    000707 695  1.0-  1.0+
980927 658  0.9-  0.4-    981025 402  0.2-  0.7-

Ephemeris:
1998 SF35                a,e,i = 1.69, 0.27, 35                  q = 1.2241
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2000 07 25    21 44.35   +44 48.7    1.427    2.046   112.6    27.3    21.2
2000 08 04    21 32.94   +45 53.0    1.360    2.026   116.4    26.6    21.1
2000 08 14    21 19.24   +45 59.4    1.302    2.005   119.6    26.1    21.0
2000 08 24    21 05.06   +45 00.3    1.253    1.983   121.9    25.7    20.8
2000 09 03    20 52.48   +42 54.1    1.216    1.958   123.0    25.6    20.8
2000 09 13    20 43.37   +39 48.0    1.193    1.932   122.8    26.0    20.7
2000 09 23    20 38.75   +35 55.9    1.182    1.905   121.0    26.8    20.7
2000 10 03    20 38.95   +31 35.1    1.187    1.876   117.9    28.1    20.7
2000 10 13    20 43.74   +27 04.1    1.204    1.846   113.5    29.7    20.7
2000 10 23    20 52.56   +22 38.9    1.235    1.814   108.4    31.4    20.8
2000 11 02    21 04.85   +18 31.4    1.276    1.781   102.7    32.9    20.9
2000 11 12    21 20.01   +14 50.1    1.327    1.747    96.8    34.2    20.9
2000 11 22    21 37.51   +11 39.0    1.384    1.712    90.8    35.2    21.0
2000 12 02    21 56.92   +08 59.7    1.445    1.676    84.9    35.9    21.1
2000 12 12    22 17.88   +06 51.4    1.509    1.639    79.1    36.2    21.1
2000 12 22    22 40.06   +05 11.7    1.573    1.601    73.5    36.1    21.2
2001 01 01    23 03.28   +03 57.7    1.635    1.564    68.2    35.7    21.2
2001 01 11    23 27.36   +03 06.1    1.694    1.526    63.1    35.1    21.2

Gareth V. Williams           (C) Copyright 2000 MPC           M.P.E.C. 2000-O40

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