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Minor planet follow-up portal
v. 3.14.2
2021 GJ4
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Schedule Spectroscopic Observations
Name
P11euxf → 2021 GJ4
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-Apr-08 20:27
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59311.0
April 7, 2021
Orbital inclination in deg
5.43734
Longitude of Ascending Node (deg)
0.32059
Arg of perihelion (deg)
149.80779
Eccentricity
0.3228048
Mean distance (AU)
1.4270312
Mean Anomaly (deg)
22.99559
Absolute Magnitude (H)
24.8
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
39
Diameter in meters
(range)
19 - 146
Physical Parameters
Diameter
Initial Diameter Guess using H=24.8 and albedo=0.14 (0.01 to 0.5)
MPC Default
38.95 m
+107.0 / -18.0
Follow-up Details
NEOCP
digest2
score
74
Number of observations
26
Arc length (days)
1.53
Time since last observation (days)
0.06
Spectroscopy Details
Known Taxonomies
None
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