Sziasztok!
Egy új periodikus (ekliptikai) üstökös akadt a kínai nóvavadászok
hálójába. Sajnos 13-14 magnitúdónál nem lesz fényesebb.
http://ustokosok.mcse.hu/
Sry
COMET P/2009 L2 (YANG-GAO)
Rui Yang, Hangzhou, Zhejiang, China; and Xing Gao, Urumqi,
Xinjiang, China, report the discovery of a new comet on several
survey images (limiting mag about 15) taken by Gao in the course of
the Xingming Comet Survey using a Canon 350D camera (+ 10.7-cm
f/2.8 camera lens) at Mt. Nanshan -- the new object identified as
cometary by Yang. After posting on the Minor Planet Center´s
´NEOCP´ webpage, numerous other CCD astrometrists have reported the
object to have cometary appearance during June 16.4-16.7 UT,
including E. Guido and G. Sostero (remotely using a "Global
Rent-a-Scope" 25-cm reflector near Mayhill, NM, U.S.A.; ten
co-added unfiltered 60-s exposures show a coma of diameter about
40" and a tail nearly 90" long in p.a. 245 deg); L. Elenin
(remotely using a 20-cm refractor at Tzec Maun Observatory near
Cloudcroft, NM; coma of size about 36" with a short tail in p.a.
225 deg); E. Prosperi and P. Camilleri (remotely using a 36-cm
reflector at Grove Creek Observatory, Trunkey, N.S.W., Australia;
30" coma with 70" tail in p.a. 240 deg); M. Suzuki (Utsunomiya,
Tochigi, Japan, remotely using a "Global Rent-a-Scope" 25-cm
reflector at Moorook, South Australia; coma diameter about 30");
Y. Ikari (Moriyama, Shiga-ken, Japan, 26-cm reflector; coma
diameter 0´.8, with a 2´.2 tail in p.a. 253 deg); R. Ligustri
(Udine, Italy; remotely using a 35-cm reflector at Moorook;
fifteen co-added 60-s exposures show a coma diameter of about 30");
C. Jacques and E. Pimentel (remotely using a 25-cm reflector at
Moorook; 45" coma and a broad tail 1´.5 long in p.a. 240 deg).
2009 UT R.A. (2000) Decl. Mag. Observer
June 15.80840 18 16 19.40 -14 15 30.7 14.2 Yang
The available astrometry, the following preliminary elliptical
orbital elements by B. G. Marsden, and an ephemeris appear on MPEC
2009-M05.
T = 2009 May 19.898 TT Peri. = 345.164
e = 0.63486 Node = 259.343 2000.0
q = 1.28936 AU Incl. = 16.223