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Minor planet follow-up portal
v. 3.14.2
2021 HD3
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Schedule Spectroscopic Observations
Name
P11fMQ3 → 2021 HD3
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)
Site
Min Altitude
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Measurements
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Last Update: 2021-May-02 09:29
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59335.0
May 1, 2021
Orbital inclination in deg
9.38686
Longitude of Ascending Node (deg)
55.2128
Arg of perihelion (deg)
209.70242
Eccentricity
0.3889514
Mean distance (AU)
1.641198
Mean Anomaly (deg)
339.64393
Absolute Magnitude (H)
24.3
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
49
Diameter in meters
(range)
24 - 183
Physical Parameters
Diameter
Initial Diameter Guess using H=24.3 and albedo=0.14 (0.01 to 0.5)
MPC Default
49.03 m
+134.0 / -23.0
Follow-up Details
NEOCP
digest2
score
77
Number of observations
18
Arc length (days)
2.11
Time since last observation (days)
0.17
Spectroscopy Details
Known Taxonomies
None
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