Schedule Observations Schedule Spectroscopic Observations
NameX74756 → C/2021 S4
Type Comet
Status Actively Following
Characterization Target
Source LOOK Project
Check Spectroscopic Feasibility Create LC Plot
Recent Blocks Scheduled
  • No blocks have been scheduled
Measurements
Show Measurements
Plot Visibility
Last Update: 2024-Jan-21 07:05
Orbital Elements
MPC Comet
Epoch of elements (MJD)
60320.0 Jan. 11, 2024
Orbital inclination in deg 17.46584
Longitude of Ascending Node (deg) 5.47481
Arg of perihelion (deg) 72.85008
Eccentricity 0.9588371
Perihelion distance (AU) 6.6912318
Epoch of perihelion Jan. 1, 2024, 8:45 p.m.
Epoch of perihelion (MJD) 60310.86467
Total Magnitude (M1) 6.5
Slope Parameter (k1) 9.0
Physical Parameters
Reciprocal of semimajor axis E2021-UA9
0.006733 au
PC autocmod 3.0f

51
0.03
K2 autocmod 3.0f

51
5.0
M2 from 5 observations, autocmod 3.0f

51
10.1 +/- 0.4
K1 autocmod 3.0f

51
9.0
M1 from 652 observations, assumed slope, autocmod 3.0f

51
6.5 +/- 0.6
Diameter Initial Diameter Guess using H=11.4 and albedo=0.14 (0.01 to 0.5)

MPC Default
18640.65 m +51106.0 / -8777.0
Follow-up Details
NEOCP digest2 score 35
Number of observations 42
Arc length (days) 35.00
Time since last observation (days) 814.83
Spectroscopy Details
Known Taxonomies None