Gallery: 46P/Wirtanen
Image taken by Charles Bell
Fig 1:
| Image Parameter | Details |
| Image Date (UTC): | 2018-11-30 |
| Image Time (UTC): | 11:49:09 |
| Exposure: | 600s |
| Filter: | BVR |
| Field of View: | |
| Observing Site: | iTelescope T13 Telescope Siding Spring Q62 |
| Observing Equipment: | |
| Digital Processing: | |
| Comments: |
46P/Wirtanen 2018-Nov-30 11:49:09 UTC Exposure 600 seconds Telescope: Takahashi Sky90 90mm f/5.6 APO Refractor CCD: SBIG ST2000 XCM One Shot Colour Mount: Paramount PME Pixel scale: 3.02 arc-secs/pixel Field of View: 60.5×80.7 arc-mins Coma dimensions measured with Vizier Aladin contours Coma B Band 32.5×29.5 arcmin extended PA 25 deg Coma V Band 46.4×39.9 arcmin extended PA 25 deg Coma R Band 25.4×22.5 arcmin extended PA 25 deg Magnitudes measured with Astrometrica B Magnitude 11.4 aperture radius 38.5 arcsec UCAC4 B Magnitude 9.9 aperture radius 111.7 arcsec UCAC4 V Magnitude 10.6 aperture radius 38.5 arcsec UCAC4 V Magnitude 9.2 aperture radius 111.7 arcsec UCAC4 R Magnitude 10.2 aperture radius 38.5 arcsec UCAC4 R Magnitude 8.9 aperture radius 111.7 arcsec UCAC4 Afrho B 43 cm rho = 3435 km Afrho B 60 cm rho = 9965 km Afrho V 50 cm rho = 3435 km Afrho V 63 cm rho = 9965 km Afrho R = 53 cm rho = 3435 km Afrho R = 61 cm rho = 9965 km Tail 20 arcmin PA 25 deg Observer: Charles Bell Observatory: Q62 Siding Spring iTelescope T13 Annotations and tail vectors with PhotoShop Ephemeris data: Sky Motion 3.66"/min P.A. 023.0 deg t - T = -12.44751 days from Perihelion Delta = 0.123 AU r = 1.069 AU Elongation = 129.7 deg Phase = 45.2 deg PsAng = 34.8 deg PA of sun-comet r vector PsAMV = 262.7 deg PA of comet negative velocity vector -v PlAng = 23.6 deg Plane angle Constellation: Cetus (Cet) True Anomaly = 345.5641 deg |
Table 1: Data about image.