Schedule Observations Schedule Spectroscopic Observations
NameSWAN25B → C/2025 R2
Type Comet
Status Actively Following
Characterization Target
Source LOOK Project
Check Spectroscopic Feasibility Create LC Plot
Recent Blocks Scheduled
Measurements
Show Measurements
Plot Visibility
Last Update: 2025-Nov-20 19:04
Orbital Elements
MPC Comet
Epoch of elements (MJD)
61000.0 Nov. 21, 2025
Orbital inclination in deg 4.47287
Longitude of Ascending Node (deg) 335.33033
Arg of perihelion (deg) 308.35333
Eccentricity 0.9940713
Perihelion distance (AU) 0.5040947
Epoch of perihelion Sept. 12, 2025, 8:14 p.m.
Epoch of perihelion (MJD) 60930.84318
Total Magnitude (M1) 14.3
Slope Parameter (k1) 14.0
Physical Parameters
Phase Slope MPC Default
5.6
Reciprocal of semimajor axis E2025-VD2
0.011825 au +/- 0.0000193
+/- 0.0000193
K1 autocmod 3.0f

8
14.0
M1 2 parameter fit from 961 observations, autocmod 3.0f

8
14.3 +/- 1.0
PC autocmod 3.0f

7
0.03
K2 autocmod 3.0f

7
5.0
M2 from 8 observations, autocmod 3.0f

7
18.1 +/- 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 1215
Arc length (days) 91.00
Time since last observation (days) 2.25
Spectroscopy Details
Known Taxonomies None