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Minor planet follow-up portal
v. 3.14.2
2021 HW3
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Name
P11g3An → 2021 HW3
Type
NEO
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)
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Measurements
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Last Update: 2021-May-08 21:59
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59334.0
April 30, 2021
Orbital inclination in deg
16.86319
Longitude of Ascending Node (deg)
183.26006
Arg of perihelion (deg)
93.18973
Eccentricity
0.5513342
Mean distance (AU)
2.5444338
Mean Anomaly (deg)
342.07289
Absolute Magnitude (H)
21.6
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
170
Diameter in meters
(range)
82 - 636
Physical Parameters
Diameter
Initial Diameter Guess using H=21.6 and albedo=0.14 (0.01 to 0.5)
MPC Default
170.0 m
+466.0 / -80.0
Follow-up Details
NEOCP
digest2
score
75
Number of observations
17
Arc length (days)
30.05
Time since last observation (days)
0.46
Spectroscopy Details
Known Taxonomies
None
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