SN 2012hr, a Type Ia supernova prior to maximum December 23,

Exoplanet occultation, asteroid occultation,
solar research, comet observation, astrometry, etc.
回覆文章
PTS
夸克星
文章: 17242
註冊時間: 週日 28 10月, 2007 08:50
來自: HK

SN 2012hr, a Type Ia supernova prior to maximum December 23,

文章 PTS » 週一 24 12月, 2012 08:34

AAVSO Special Notice #318

SN 2012hr, a Type Ia supernova prior to maximum December 23, 2012

SN 2012hr was discovered by Colin Drescher (Calamvale, QLD, Australia; Backyard Observatory Supernova Search (BOSS)) on 2012 December 16.53. The object was discovered at a red magnitude of 14.8. Subsequent spectroscopy by Milisavljevic et al. and Morrell et al. on December 19-20 indicate this object is a Type Ia supernova about one week before maximum light. The object is well-placed outside of the majority of galaxian light of the presumed host, PGC 18880. See CBET 3346 (D.W.E. Green, editor) for more details.

The object will likely be slightly brighter than 14.8 at the time of publication of this Special Notice. Use of photometric filters is strongly encouraged by CCD observers, so that light curves may be more easily calibrated. The supernova is located at the following (J2000)
coordinates:

RA: 06 21 38.46, Dec: -59 42 50.6

A sequence is available for this supernova, and may be plotted using AAVSO VSP:

http://www.aavso.org/

Please report all observations as "SN 2012hr".

This AAVSO Special Notice was prepared by M. Templeton.

---------------------------------------------------
SUBMIT OBSERVATIONS TO THE AAVSO

Information on submitting observations to the AAVSO may be found at:
http://www.aavso.org/webobs

SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION

A Special Notice archive is available at the following URL:
http://www.aavso.org/special-notice-archive

Subscribing and Unsubscribing may be done at the following URL:
http://www.aavso.org/observation-notifi ... ialnotices

回覆文章

回到「業餘天文研究專區 Amateur Astronomers' Research Area」

誰在線上

正在瀏覽這個版面的使用者:沒有註冊會員 和 8 位訪客