NASA/JPL elements
IAU/MPC elements
On 2021 Dec 18 16h50 UT by Nicolas Biver
(Copyright Nicolas Biver)
| Coma Total magnitude (m1) | 4.6 | Aperture radius used for m1 | 1.3 ' | Nuclear magnitude (m2) | 7.9 | Aperture radius used for m2 | 6 " | Coma diameter | 2 ' | Coma condensation degree (DC) | 6 | r (dist/Sun) | 0.709 AU | d (dist/Earth) | 0.324 AU | Right ascension | 19 50 00.0 h m s | Declination | -27 00 00 ° ' " | Instrumental configuration | Config2 | Instrument | Dobson 256mm F/D 4.97 | Instrument type | Newton | Instrument aperture (0=naked eye) | 256 mm | Instrument focale length | 1267 mm | Instrument focale/diameter | 4.94 | Filter(s) | None | Camera | SONY alpha7S | Sensor | DC | Sensor size | 36*24 mm2 | Sensor pixels number | 4240*2832 | Sensor temperature | 8 °C | Binning | 2x2 | Mount | Dobson | Motorization | No | Autoguide | No | Exposure total time | 6.2 s | Exposure details | 27/40s+43*1/6s | Sky transparency (naked eye max mag) | 2 | Seeing | 3 | Moon phase | 0 ° | Moon elongation | 160 ° | Air mass | 12 | Location | Versailles | Reference stars catalog | Tycho | Resulting picture sampling (scale) | 2.77 "/pix | Image processing | images RAW: binning, flat, alignement, alignement sur comète, somme, retrait gradient | Observation submission date | 2021 Dec 20 18h11m11s |
(Record n° 24649)