Central Bureau for Astronomical Telegrams
IAUC 4748: 1989 DA
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Read IAUC 4749
Circular No. 4748
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET MARSDEN or GREEN@CFAPS2.SPAN
1989 DA
The following positions have been measured by B. Roman from
films taken by E. Helin, D. Tracy and himself with the 0.46-m
Palomar Schmidt:
1989 UT R.A. (1950) Decl. Mag.
Mar. 1.22309 9 09 03.11 +39 08 53.1 15.5
1.22865 9 09 08.00 +39 07 37.7
1.25590 9 09 35.62 +39 01 02.4
1.26146 9 09 40.82 +38 59 46.6
The following orbital elements have been determined by B. G.
Marsden, Center for Astrophysics, from the midpoints of the four
exposures (see also IAUC 4744):
T = 1989 Feb. 2.818 ET Peri. = 138.756
e = 0.41274 Node = 349.241 1950.0
q = 0.98512 AU Incl. = 5.189
a = 1.67747 AU n = 0.453653 P = 2.17 years
1989 ET R.A. (1950) Decl. Delta r V
Mar. 1 9 04.90 +40 02.5 0.046 1.027 14.7
2 9 22.17 +36 01.4
3 9 37.07 +32 03.1 0.048 1.033 14.6
4 9 49.96 +28 13.1
5 10 01.15 +24 35.2 0.052 1.040 14.6
6 10 10.90 +21 11.7
7 10 19.44 +18 03.8 0.057 1.047 14.6
8 10 26.97 +15 11.5
9 10 33.63 +12 34.5 0.063 1.054 14.7
10 10 39.57 +10 11.8
11 10 44.88 + 8 02.5 0.069 1.062 14.9
12 10 49.66 + 6 05.3
13 10 53.98 + 4 19.2 0.077 1.070 15.1
14 10 57.90 + 2 43.1
15 11 01.47 + 1 15.8 0.085 1.078 15.3
16 11 04.74 - 0 03.4
17 11 07.74 - 1 15.3 0.093 1.087 15.6
1989 March 2 (4748) Daniel W. E. Green
Read IAUC 4749
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