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 comet 315P/LONEOS - (P/2004 VR8 = P/2013 V6 )

Photometric data obtained by use of FOCAS-II software

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

COMET         UTC                    +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT

------------  -------------------  -----  -----  -----  -----  -----  -----  ----  ----  ---

315P          22/01/2017 01:54:59  15.71  15.17  14.94  14.82  14.78  14.79  10.9  17.4  B96

315P          22/01/2017 01:54:59*  0.03   0.06   0.08   0.11   0.14   0.14     4   3.7  USN

                                                                     AFRHO         LOG

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

------------  -------------------   -----  -----  -----  -----  ---  -----  ----  -----  ---

315P          22/01/2017 01:54:59    1.72   2.45  16.05  15.36   11    122    11  2.085  B96

Discovery:

discovered by LONEOS as an 18th magnitude asteroidal object , designated 2004 VR8 (cf. MPS 118755, MPEC 2004-V48), has been found to show a 10"-diameter coma and a tail 16" long in p.a. 140° on R-band CCD observations taken by C. W. Hergenrother (Lunar and Planetary Laboratory) with the 1.54-m Kuiper reflector at Catalina on 2004 Nov. 19.3 UT. Also, A. Nakamura (Kuma, Ehime, Japan) reports that 240-s unfiltered CCD frames taken with a 0.60-m reflector on Dec. 8.55 and 9.55 shows to object’s image to be slightly ‘softer’ than other field stars of similar brightness, and a possible very faint tail is visible to the southeast. It will reach perihelion at 2.38 AU in early September 2005 and has a period of 10.7 years. It may reach 16th magnitude towards the end of 2005.  [IAUC 8451, 2004 December 10]

Recovery:

CBET 4038, MPEC 2014-Y45, 2014 December 24