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IAU Minor Planet Center

Minor Planet Center

MPEC 1998-A22: CRITICAL-LIST MINOR PLANETS (1998 JAN. 27.0 TT)

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M.P.E.C. 1998-A22                                Issued 1998 Jan. 14, 22:56 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.

             BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
                   URL http://cfa-www.harvard.edu/iau/mpc.html

                  CRITICAL-LIST MINOR PLANETS (1998 JAN. 27.0 TT)

     Ephemerides and orbital elements for the objects listed here
are available on the Minor Planet Center's WWW site at:
http://cfa-www.harvard.edu/cfa/ps/Ephemerides/CritList/index.html

1.  Object observed at only one opposition:
      (719)

2.  Objects observed at only two oppositions:
     (4581)  (4688)  (5335)  (5370)  (5797)  (6489)  (6491)  (7025)  (7236)
     (7822)  (7839)  (8014)  (8034)

3.  Objects observed at only three oppositions:
     (2608)  (3360)  (3757)  (3908)  (4544)  (5324)  (6130)  (6322)  (6618)
     (7335)  (7336)

4.  Objects observed at four or more oppositions, last more than ten
    years ago:
     (1237)  (1915)  (2816)  (3758)

5.  Objects observed at four or more oppositions, only one night in last
    ten years:
      (457)   (587)   (664)   (927)  (1035)  (1168)  (1236)  (1290)  (1521)
     (1906)  (2135)  (2430)  (2782)  (3269)  (3344)  (3400)  (3417)  (3521)
     (3648)  (3725)  (3756)  (3880)  (4130)  (4295)  (4300)

6.  Other poorly-observed objects observed at four or more oppositions:
     (2100)  (2285)  (2340)  (3200)  (3362)  (3416)  (3554)  (3607)  (3747)
     (3750)  (3753)  (3800)  (3838)  (4034)  (4769)  (4776)  (5011)  (5381)
     (5395)  (5590)  (5604)  (5786)  (5819)  (5828)  (5912)  (6037)  (6239)

   Ephemeris Positions Of Critical-List Minor Planets For 1998 Jan. 27.0 TT

 Designation (and name)   Ref.   R.A. (2000) Decl.  Geo.  Hel.  El.   Ph.   V
 (2340) Hathor            30890* 02 36.94 +02 10.2  0.49  1.10  90.7  63.2 20.1
 (1035) Amata             16997* 03 45.73 +41 44.1  2.76  3.29 114.9  15.7 15.9
 (4130) Ramanujan         14777* 05 26.43 +10 24.7  2.38  3.14 133.3  13.2 17.7
 (7335) 1989 JA           28570* 09 47.62 +38 08.9  1.57  2.50 155.1   9.6 20.6
 (3725) Valsecchi         12691* 09 53.10 +21 17.3  2.05  3.00 161.9   5.8 18.1
 (3521) Comrie            30890* 10 05.06 +19 02.8  1.20  2.15 159.2   9.4 17.1
 (3800) Karayusuf         26726* 10 12.18 +36 25.5  0.60  1.54 152.5  17.1 16.1
 (5590) 1990 VA           28281* 10 27.62 -65 15.0  0.28  1.04  93.6  70.7 19.5
 (4776) Luyi              27892* 10 42.27 +13 21.5  1.88  2.77 149.5  10.4 19.1
 (5395) 1988 RK11         27545* 10 48.03 +04 02.9  1.86  2.72 144.9  12.0 19.8
 (2285) Ron Helin         27888* 11 00.37 +05 22.3  1.82  2.67 142.7  12.9 18.5
 (3648) Raffinetti        28279* 11 09.88 -05 20.4  1.57  2.38 135.4  16.9 16.8
 (2816) Pien              25515* 11 22.98 +13 52.5  2.36  3.18 140.0  11.5 16.8
 (2782) Leonidas          23656* 11 46.68 +04 01.6  2.48  3.21 131.5  13.3 18.9
 (1168) Brandia           16847* 11 57.83 -13 13.4  2.47  3.10 121.2  15.8 17.8
 (1521) Seinajoki         14765* 12 52.60 +00 59.5  2.39  2.94 115.0  17.6 16.7
 (5912) 1989 YR           23333* 13 06.17 -03 04.2  1.74  2.28 110.4  23.9 18.0
 (3757) 1982 XB           30890* 13 47.71 -01 51.4  0.53  1.20 101.1  53.5 19.9
 (1236) Thais             25188* 14 07.51 -03 29.9  2.72  2.98  95.9  19.2 17.4

Gareth V. Williams           (C) Copyright 1998 MPC           M.P.E.C. 1998-A22

Read MPEC 1998-A21 Read MPEC 1998-A23


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