Circular No. 5392 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 1991 VK E. Helin and K. Lawrence (and the latter should also have been credited with the discovery of 1991 VE on IAUC 5385) have discovered another fast-moving asteroidal object with the 0.46-m Palomar Schmidt, with assistance also from P. Rose: 1991 UT R.A. (1950) Decl. Mag. Nov. 1.16337 23 45 14.30 +25 09 34.2 15.5 1.19132 23 45 09.47 +25 09 28.6 2.19063 23 42 28.72 +25 05 28.6 4.21823 23 37 02.41 +24 55 56.0 Preliminary orbital elements from the above observations by B. G. Marsden, Harvard-Smithsonian Center for Astrophysics: T = 1992 Jan. 7.780 ET Peri. = 173.254 e = 0.50349 Node = 294.423 1950.0 q = 0.91076 AU Incl. = 5.390 a = 1.83431 AU n = 0.396731 P = 2.48 years 1991 ET R.A. (1950) Decl. Delta r V Nov. 20 22 56.88 +22 51.5 0.206 1.092 14.8 25 22 44.92 +21 58.6 30 22 32.69 +20 58.8 0.173 1.032 14.7 Dec. 5 22 19.40 +19 48.3 10 22 03.75 +18 19.3 0.138 0.981 14.7 15 21 43.68 +16 15.9 20 21 16.12 +13 08.3 0.102 0.942 15.2 25 20 37.07 + 8 08.8 30 19 43.57 + 0 31.3 0.076 0.918 18.3 (3288) SELEUCUS V. A. Shor, Institute for Theoretical Astronomy, St. Petersburg, informs us that the magnitudes given for this object in the special ephemerides on pages 454 and 469-470 of Efemeridy Malykh Planet for 1992 require correction by +14.9. The values given in the opposi- tion ephemeris on page 402 are correct. 1991 November 21 Daniel W. E. Green