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Comet 256P/LINEAR - ( = P/2003 HT15 = P/2012 B2)

Discovery:

Comet 2003 HT15 was discovered on april 26, 2003 as an apparently asteroidal object of 18th magntiude found by LINEAR.  Carl Hergenrother saw on CCD-images, taken with the Mount Hobkins 1.2-m telescope on June 24.3, that this object was cometary.  Hergenrother noted a diffuse coma of diameter 15" (and mag 18.6 within an aperture of radius 8") and a broad tail 60" long in p.a. 115 deg on co-added 900-s R-band images taken on June 24.3 UT . The comet has perihelion at 2.7 AU and a period of 9.9 years. [IAUC 8156] It will further fade.

Recovery:

Comet 2003 HT15 was recovered on 2012 January 26.5 by T. Seki, S. Shimomoto and H. Sato at Geisei with a 0.70-m f/7 reflector and assigned as comet 252P/2012 B2 (LINEAR). The return to perihelion is 0.17 days later than the prediction

Last updated: 2020-11-01

Photometric data obtained by use of FOCAS-II software

                                   10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB   COD

OBJECT        DATE       TIME        +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT

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                                                                     AFRHO         LOG

COMET         UTC                   DELTA    r    BOX "   MAG   RSR    CM    +/-  AFRHO  OBS

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