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v. 3.14.2
2021 HR3
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Name
N00i7cb → 2021 HR3
Type
Asteroid
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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Measurements
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Last Update: 2021-May-06 11:12
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59331.0
April 27, 2021
Orbital inclination in deg
24.93871
Longitude of Ascending Node (deg)
205.50083
Arg of perihelion (deg)
305.64897
Eccentricity
0.4585188
Mean distance (AU)
3.131587
Mean Anomaly (deg)
9.42544
Absolute Magnitude (H)
18.8
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
617
Diameter in meters
(range)
298 - 2310
Physical Parameters
Diameter
Initial Diameter Guess using H=18.8 and albedo=0.14 (0.01 to 0.5)
MPC Default
617.25 m
+1692.0 / -291.0
Follow-up Details
NEOCP
digest2
score
36
Number of observations
12
Arc length (days)
27.96
Time since last observation (days)
1.22
Spectroscopy Details
Known Taxonomies
None
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