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Minor planet follow-up portal
v. 3.14.2
2021 JG4
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Name
P11g2i9 → 2021 JG4
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-11 16:11
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59344.0
May 10, 2021
Orbital inclination in deg
17.37307
Longitude of Ascending Node (deg)
49.33665
Arg of perihelion (deg)
101.32929
Eccentricity
0.2951772
Mean distance (AU)
1.4476271
Mean Anomaly (deg)
44.79025
Absolute Magnitude (H)
23.6
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
68
Diameter in meters
(range)
33 - 253
Physical Parameters
Diameter
Initial Diameter Guess using H=23.6 and albedo=0.14 (0.01 to 0.5)
MPC Default
67.68 m
+186.0 / -32.0
Follow-up Details
NEOCP
digest2
score
100
Number of observations
10
Arc length (days)
1.81
Time since last observation (days)
1.60
Spectroscopy Details
Known Taxonomies
None
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