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Minor planet follow-up portal
v. 3.17.0a
434196 (2003 HG2)
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Type
NEO (Apollo) [PHA]
Status
Actively Following
Characterization Target
Source
Goldstone
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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Min Altitude
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Measurements
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Last Update: 2025-Dec-23 00:32
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
61000.0
Nov. 21, 2025
Orbital inclination in deg
19.77977
Longitude of Ascending Node (deg)
214.22236
Arg of perihelion (deg)
225.2067
Eccentricity
0.1346544
Mean distance (AU)
1.0625858
Mean Anomaly (deg)
345.76643
Absolute Magnitude (H)
21.56
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
173
Diameter in meters
(range)
84 - 648
Physical Parameters
Absolute Magnitude
E2025-OA0
21.59
Phase Slope
MPC Default
0.15
Diameter
Initial Diameter Guess using H=21.56 and albedo=0.14 (0.01 to 0.5)
MPC Default
173.17 m
+475.0 / -82.0
Follow-up Details
Number of observations
188
Arc length (days)
8212.00
Time since last observation (days)
66.94
Spectroscopy Details
Known Taxonomies
None
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