Schedule Observations Schedule Spectroscopic Observations
NameSWAN25B → C/2025 R2
Type Comet
Status Not Following
Source Minor Planet Center
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Recent Blocks Scheduled
  • No blocks have been scheduled
Measurements
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Last Update: 2025-Oct-02 00:00
Orbital Elements
MPC Comet
Epoch of elements (MJD)
61000.0 Nov. 21, 2025
Orbital inclination in deg 4.47345
Longitude of Ascending Node (deg) 335.34417
Arg of perihelion (deg) 308.32284
Eccentricity 0.99342
Perihelion distance (AU) 0.5040665
Epoch of perihelion Sept. 12, 2025, 7:57 p.m.
Epoch of perihelion (MJD) 60930.83133
Total Magnitude (M1) 11.9
Slope Parameter (k1) 8.75
Physical Parameters
Phase Slope MPC Default
3.5
Reciprocal of semimajor axis E2025-T80
0.013095 au +/- 0.0008433
+/- 0.0008433
K1 autocmod 3.0f

5
8.75
M1 2 parameter fit from 180 observations, autocmod 3.0f

5
11.9 +/- 1.0
Diameter Initial Diameter Guess using H=7.9 and albedo=0.14 (0.01 to 0.5)

MPC Default
93424.54 m +256138.0 / -43989.0
Follow-up Details
NEOCP digest2 score 35
Number of observations 206
Arc length (days) 50.00
Time since last observation (days) 12.78
Spectroscopy Details
Known Taxonomies None