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Comet 193P/LINEAR-NEAT - (2007 U2)

Photometric data obtained by use of FOCAS-II software

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

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

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

193P          05/09/2021 21:25:47  16.75  16.07  15.83  15.77                 6.1  16.9  B96

193P          05/09/2021 21:25:47*  0.03   0.17   0.22   0.40                   3   4.0  Gai

193P          29/09/2021 21:18:52  16.63  16.03  15.75  15.67  15.69  15.71   4.6  17.9  B96

193P          29/09/2021 21:18:52*  0.07   0.11   0.10   0.09   0.14   0.16     3   3.7  Gai

193P          08/10/2021 20:39:10  17.20  16.62  16.30  16.28                 3.9  17.6  B96

193P          08/10/2021 20:39:10*  0.03   0.05   0.05   0.05                   2   3.9  Gai

                                                                     AFRHO         LOG

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

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

193P          05/09/2021 21:25:47    1.17   2.17  23.61  16.06    6     23     4  1.367  B96

193P          29/09/2021 21:18:52    1.22   2.18  22.64  16.06    5     26     6  1.408  B96

193P          08/10/2021 20:39:10    1.27   2.19  21.69  16.61    4     17     4  1.227  B96

Discovery:

K. J. Lawrence, E. F. Helin, and S. H. Pravdo, Jet Propulsion Laboratory, reported the discovery by the NEAT program of a comet, of 17th mag, having a nuclear condensation of diameter about 6" and a 100" tail toward the southwest, on CCD images taken with the 1.2-m Schmidt telescope at Palomar on Aug. 28.35. Following posting on the NEO Confirmation Page, T. B. Spahr (Minor Planet Center) identified this object with an object reported as asteroidal by the LINEAR program (first detected on Aug. 17.40 at m_2 = 18.6-19.4). Other reported physical descriptions from CCD images include: Aug. 29.04 UT, m_1 = 16.0, tail > 50" long in p.a. 237 deg (M. Tichy, Klet, 0.57-m reflector); 29.05, small coma, tail at least 4' long (L. Sarounova, Ondrejov, 0.65-m reflector); 29.08, diffuse (A. Galad and D. Kalmancok, Modra, 0.6-m reflector); 29.30, 40" tail in p.a. 243 deg (K. Smalley, Louisburg, KS, 0.75-m reflector); 29.38, well-condensed coma, broad tail 2' long in p.a. 246 deg (D. Balam, Dominion Astrophysical Observatory, 1.82-m Plaskett telescope); 29.43, m_1 = 16.9, tail about 70" long in p.a. about 240 deg (P. J. Shelus, McDonald Observatory, 0.76-m reflector).