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Minor planet follow-up portal
v. 3.15.2
PANSTARRS (P/2021 R1)
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Name
P11k2mj → P/2021 R1
Type
Comet (Jupiter Family)
Status
Actively Following
Characterization Target
Source
LOOK Project
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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Measurements
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Last Update: 2025-Jan-18 20:04
Orbital Elements
MPC Comet
Epoch of elements (MJD)
60000.0
Feb. 25, 2023
Orbital inclination in deg
5.51906
Longitude of Ascending Node (deg)
143.35309
Arg of perihelion (deg)
220.35709
Eccentricity
0.41472
Perihelion distance (AU)
4.8860642
Epoch of perihelion
Dec. 17, 2021, 1:33 a.m.
Epoch of perihelion (MJD)
59565.06473
Total Magnitude (M1)
7.5
Slope Parameter (k1)
15.25
Physical Parameters
K1
autocmod 3.0e
9
15.25
M1
from 124 observations, assumed slope, autocmod 3.0e
9
7.5
+/- 0.5
Diameter
Initial Diameter Guess using H=14.6 and albedo=0.14 (0.01 to 0.5)
MPC Default
4270.33 m
+11708.0 / -2011.0
Follow-up Details
NEOCP
digest2
score
35
Number of observations
126
Arc length (days)
835.00
Time since last observation (days)
590.84
Spectroscopy Details
Known Taxonomies
None
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