C/2025 J1 (Borisov) (Record n° 31929)
Perihelion distance : 3.58 AU
Inclination to ecliptic : 95 °
Eccentricity : 1
NASA/JPL elements
IAU/MPC elements
On 2026 Sep 25 05h10 UT by Jean-Gabriel BoschMagnitude (MPC m2) 18.1 Aperture radius for m2 7.2 " Magnitude band G r (dist/Sun) 3.705 AU d (dist/Earth) 3.866 AU Right ascension 108.90237 ° Declination +14.78506 ° ADES report
# version=2022
# observatory
! mpcCode Y87
# submitter
! name J.-G. Bosch
# observers
! name J.-G. Bosch
# measurers
! name J.-G. Bosch
# telescope
! design reflector
! aperture 0.25
! fRatio 4.75
! detector CMO
# software
! astrometry Tycho 13.6
! photometry Tycho 13.6
permID |provID |trkSub |mode|stn |obsTime |ra |dec |rmsRA|rmsDec|rmsFit|astCat |mag |rmsMag|band|photCat |photAp|logSNR|exp |notes|remarks
|C/2025 J1 | ABC1835| CMO|Y87 |2026-09-25T05:09:54Z |108.90237 |+14.78506 |0.34 |0.37 |0.50 | Gaia2|17.8 |0.33 | G| Gaia2| 7.2 |1.06 | 275| K|
|C/2025 J1 | ABC1835| CMO|Y87 |2026-09-25T05:14:20Z |108.90210 |+14.78391 |0.44 |0.46 |0.64 | Gaia2|18.0 |0.21 | G| Gaia2| 7.2 |0.94 | 250| K|
|C/2025 J1 | ABC1835| CMO|Y87 |2026-09-25T05:18:34Z |108.90203 |+14.78434 |0.65 |0.66 |0.93 | Gaia2|18.5 |0.51 | G| Gaia2| 7.2 |0.66 | 250| K|Instrument type Newton Instrument aperture (0=naked eye) 250 mm Instrument focale length 1187.5 mm Instrument focale/diameter 4.75
Camera Asi 294MM Sensor CMOS Sensor temperature -5 °C Binning 4x4 Mount EQ6-R pro Observatory MPC code Y87
Location Trevinca skies-Amalthea Reference stars catalog (ast) Gaia2 Reference stars catalog (phot) Gaia2 Used softwares Tycho Tracker Observation submission date 2026 Sep 25 05h37m36s