Schedule Observations Schedule Spectroscopic Observations
NameSWAN21D → C/2021 D1
Type Comet (Long Period)
Status Not Following
Source Minor Planet Center
Check Spectroscopic Feasibility Create LC Plot
Recent Blocks Scheduled
  • No blocks have been scheduled
Measurements
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Last Update: 2021-May-11 00:00
Orbital Elements
MPC Comet
Epoch of elements (MJD)
59400.0 July 5, 2021
Orbital inclination in deg 31.46076
Longitude of Ascending Node (deg) 311.27135
Arg of perihelion (deg) 72.22481
Eccentricity 0.9906716
Perihelion distance (AU) 0.9018079
Epoch of perihelion Feb. 27, 2021, 2:39 p.m.
Epoch of perihelion (MJD) 59272.61085
Total Magnitude (M1) 13.3
Slope Parameter (k1) 14.5
Physical Parameters
Reciprocal of semimajor axis E2021-N06
0.011866 au +/- 0.0000052
+/- 0.0000052
PC autocmod 2.9c

6
0.03
K2 autocmod 2.9c

6
5.0
M2 from 19 observations, autocmod 2.9c

6
14.4 +/- 0.2
K1 autocmod 2.9c

6
14.5
M1 2 parameter fit from 285 observations, autocmod 2.9c

6
13.3 +/- 1.0
Diameter Initial Diameter Guess using H=12.0 and albedo=0.14 (0.01 to 0.5)

MPC Default
14140.38 m +38768.0 / -6658.0
Follow-up Details
NEOCP digest2 score 35
Number of observations 351
Arc length (days) 72.00
Time since last observation (days) 292.07
Spectroscopy Details
Known Taxonomies None