Schedule Observations Schedule Spectroscopic Observations
NameC45ME22 → C/2020 X4
Type Comet (Long Period)
Status Not Following
Source Minor Planet Center
Check Spectroscopic Feasibility Create LC Plot
Recent Blocks Scheduled
Measurements
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Last Update: 2021-Sep-13 00:00
Orbital Elements
MPC Comet
Epoch of elements (MJD)
59400.0 July 5, 2021
Orbital inclination in deg 80.51083
Longitude of Ascending Node (deg) 161.89817
Arg of perihelion (deg) 139.96318
Eccentricity 0.8800377
Perihelion distance (AU) 5.2065000
Epoch of perihelion Nov. 14, 2020, 10:33 p.m.
Epoch of perihelion (MJD) 59167.94004
Total Magnitude (M1) 7.2
Slope Parameter (k1) 13.0
Physical Parameters
Reciprocal of semimajor axis E2021-S45
0.023987 au
K1 autocmod 2.9e

6
13.0
M1 from 93 observations, assumed slope, autocmod 2.9e

6
7.2 +/- 0.8
Diameter Initial Diameter Guess using H=12.3 and albedo=0.14 (0.01 to 0.5)

MPC Default
12315.75 m +33766.0 / -5799.0
Follow-up Details
NEOCP digest2 score 35
Number of observations 113
Arc length (days) 273.00
Time since last observation (days) 167.08
Spectroscopy Details
Known Taxonomies None