NASA/JPL elements
IAU/MPC elements
On 2017 Apr 17 23h58 UT by Nicolas Biver
(Copyright Nicolas Biver)
| Coma Total magnitude (m1) | 9.9 | Aperture radius used for m1 | 2.0 ' | Nuclear magnitude (m2) | 13.6 | Aperture radius used for m2 | 4.0 " | Coma diameter | 4.0 ' | Coma condensation degree (DC) | 5 | Tail length | 0.2 ° | Tail position angle (PA) | 310 ° | r (dist/Sun) | 1.801 AU | d (dist/Earth) | 1.157 AU | Right ascension | 16 16 48.2 h m s | Declination | +46 46 25 ° ' " | Instrumental configuration | Config1 | Instrument | T407 F/D 4.3 Dobson | Instrument type | Newton | Instrument aperture (0=naked eye) | 407 mm | Instrument focale length | 1750 mm | Instrument focale/diameter | 4.29 | Filter(s) | None | Camera | Sony A7s | Sensor | DC | Sensor size | 36x24 mm2 | Sensor pixels number | 4240x2832 | Binning | 2x2 | Mount | dobson | Motorization | No | Autoguide | No | Exposure total time | 29 s | Exposure details | 58x1/2s | Sky transparency (naked eye max mag) | 5.5 | Seeing | 3 | Air mass | 1.2 | Location | Crespières, Yvelines, France | Reference stars catalog | Tycho-2 | Used softwares | IRIS | Resulting picture sampling (scale) | 2.0 "/pix | Image processing | Somme et retrait gradient sous IRIS | Remarks or comments | Nord vers PA 80° sur l'image | Observation submission date | 2017 Apr 18 16h45m58s |
(Record n° 17543)