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73P-BT/Schwassmann-Wachmann

Orbital period : 5.40 years

NASA/JPL elements
IAU/MPC elements


On 2017 Feb 11 08h18 UT by Thierry Noel


(Copyright Thierry Noel)

Nuclear magnitude (m2)12.8
m2 standard deviation0.0
Aperture radius used for m26.5 "
r (dist/Sun)1.085 AU
d (dist/Earth)1.406 AU
Right ascension18 10 18.90 h m s
Declination-20 09 49.8 ° ' "
MPC report
COD W97
CON Thierry Noel [thierrynoel38a@free.fr]
OBS A. Maury, B. Sandness, T. Noel
MEA T. Noel
TEL 0.38-m f/4.6 Newton + CCD
COM 73P=original comet (with tail)
COM 73Pa=fragment (without tail but still with same motion as 73P)
ACK MPCReport file updated 2017.02.11 14:00:13
AC2 thierrynoel38a@free.fr
NET Gaia DR1
0073Pbt       C2017 02 11.34595 18 10 18.90 -20 09 49.8          12.8 N      W97
0073Pbt       C2017 02 11.36422 18 10 24.53 -20 09 59.3          12.8 N      W97
Instrument typeNewton
Instrument aperture (0=naked eye)380 mm
Instrument focale length1748 mm
Instrument focale/diameter4.6
Filter(s)None
CameraST11000
SensorCCD
Sensor temperature-25 °C
Binning1x1
MountNova
AutoguideNo
Exposure details8x30s
Observatory MPC codeW97
LocationSan Pedro de Atacama, Chile
Reference stars catalogGaia DR1
Used softwaresASTROMETRICA
Resulting picture sampling (scale)1.09 "/pix
Image processingPrism (-dark, /flat), Astrometrica (add), Iris (levels, ddp, crop)
Remarks or comments73Pbt = fragment outburst (brighter than 73P) ! Tracking adjusted on 73P movement.
Observation submission date2017 Feb 11 14h04m27s
Observation modification date2017 May 23 23h32m22s

(Record n° 17129)

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