THE ASTRONOMER Electronic Circular No 799 1993 Dec 19 18.40UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise, Basingstoke,
Hants, RG22 4PP,England. Telephone/FAX(0256)471074 Int:+44256471074
TELEX: 9312111261 Answerback: TA G TELECOM GOLD: 10074:MIK2885
GMH at UK.AC.RUTHERFORD.STARLINK.ASTROPHYSICS STARLINK: RLSAC::GMH
GMH at UK.AC.CAM.ASTRONOMY.STARLINK STARLINK: CAVAD::GMH
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COMET KUSHIDA-MURAMATSU (1993t)
S. Nakano, Sumoto, Japan, reports the photographic discovery of a
comet by Yoshio Kushida and Osamu Muramatsu:
1993 UT R.A. (2000) Decl. m1 Observer
Dec. 8.65382 5 35 49.02 +22 33 05.1 16.5 Kushida
8.68646 5 35 47.44 +22 33 05.7 "
9.54254 5 35 06.94 +22 33 25.7 16.5 "
9.57813 5 35 05.26 +22 33 27.6 "
11.81180 5 33 17.35 +22 34 19.6 16 "
12.53843 5 32 42.26 +22 34 37.3 Kojima
12.54076 5 32 42.23 +22 34 38.2 Kobayashi
Y. Kushida and O. Muramatsu (Yatsugatake South Base Observatory).
0.25-m f/3.4 reflector. Comet diffuse with central condensation;
coma diameter about 1'-2'.
IAUC 5903
S. Nakano, Sumoto, Japan, provides the following preliminary
parabolic orbital elements. It is possible that this is a
short-period comet.
T = 1994 Nov. 26.155 TT Peri. = 117.137
Node = 86.164 2000.0
q = 1.13471 AU Incl. = 10.148
1993/94 R. A. (2000) Decl. Delta r Elong. Phase m1
Dec 19 5 27.34 +22 36.9 3.537 4.518 175.2 1.0 15.8
24 5 23.12 +22 38.4 3.499 4.469 169.2 2.4 15.7
29 5 18.91 +22 39.6 3.469 4.419 163.2 3.7 15.7
Jan. 3 5 14.80 +22 40.6 3.446 4.369 157.1 5.0 15.6
8 5 10.85 +22 41.6 3.432 4.319 151.1 6.3 15.5
13 5 07.14 +22 42.5 3.424 4.269 145.2 7.6 15.5
18 5 03.72 +22 43.6 3.423 4.218 139.3 8.7 15.4
IAUC 5904
LL ANDROMEDAE
Further to the note on E795, Brian Manning, Stakenbridge, UK has
secured a precise position for this object:
RA 00h39m11.90s DEC +26 20'54.9" [1950]
Taichi Kato, Japan e-mails:
"Three nights' V-band CCD photometry at Ouda revealed that this
obscure dwarf nova definitely belongs to SU UMa-type. The object
is likely to be developing its full superhumps.
The hump amplitude is still very small (~0.04 ~ 0.08 mag), but is
characterized by rather sharp minima and broad (initially doubly
peaked) maxima. The times of mimima have been successfully
expressed by a single period as indicated by the following O-C
table. Min.UT E O-C
9.379 0 -0.003
9.439 1 0.000
9.498 2 0.002
11.434 36 -0.000
11.492 37 0.001
11.550 38 0.002
12.403 53 -0.000
12.458 54 -0.002
12.518 55 0.001
12.574 56 -0.000
O-C's are calculated by the formula: Min.UT = 9.382 + 0.057006 E
The short period is really remarkable. The period is actually
shorter than the superhump period of WZ Sge itself! (0.05714 day).
It thus appears this belongs to the WZ Sge class of variables."