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Minor planet follow-up portal
v. 3.14.2
Sheppard (P/2021 R8)
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Name
i249429 → P/2021 R8
Type
Comet
Status
Not Following
Source
Minor Planet Center
UTC date
------------ Any 1.0m ------------
LSC 1.0m - W85-87; (CTIO, Chile)
ELP 1.0m - V37,V39; (McDonald, Texas)
COJ 1.0m - Q63-64; (Siding Spring, Aust.)
CPT 1.0m - K91-93; (Sutherland, S. Africa)
TFN 1.0m - Z31,Z24; (Tenerife, Spain)
------------ Any 0.4m ------------
LSC 0.4m - W89,W79; (CTIO, Chile)
ELP 0.4m - V38; (McDonald, Texas)
OGG 0.4m - T03-04; (Maui, Hawaii)
COJ 0.4m - Q58-59; (Siding Spring, Aust.)
CPT 0.4m - L09; (Sutherland, S. Africa)
TFN 0.4m - Z17,Z21; (Tenerife, Spain)
------------ Any 2.0m ------------
FTS 2.0m - E10; (Siding Spring, Aust.) [MuSCAT4]
FTN 2.0m - F65; (Maui, Hawaii ) [MuSCAT3]
------------ Non LCO ------------
Mt John 1.8m - 474 (Mt John, NZ)
Site
Min Altitude
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Recent Blocks Scheduled
No blocks have been scheduled
Measurements
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Plot Visibility
Last Measurement: 2021-Dec-07 02:36
Orbital Elements
MPC Comet
Epoch of elements (MJD)
59600.0
Jan. 21, 2022
Orbital inclination in deg
2.20334
Longitude of Ascending Node (deg)
167.02834
Arg of perihelion (deg)
190.77564
Eccentricity
0.2937406
Perihelion distance (AU)
2.1309655
Epoch of perihelion
Oct. 7, 2021, 11:13 a.m.
Epoch of perihelion (MJD)
59494.46787
Total Magnitude (M1)
18.6
Slope Parameter (k1)
10.0
Physical Parameters
K1
autocmod 2.9e
1
10.0
M1
from 25 observations, assumed slope, autocmod 2.9e
1
18.6
+/- 0.7
Diameter
Initial Diameter Guess using H=19.9 and albedo=0.14 (0.01 to 0.5)
MPC Default
371.93 m
+1020.0 / -175.0
Follow-up Details
NEOCP
digest2
score
35
Number of observations
25
Arc length (days)
117.00
Time since last observation (days)
82.05
Spectroscopy Details
Known Taxonomies
None
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