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Minor planet follow-up portal
v. 3.14.2
2021 JE4
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Name
P11g1U1 → 2021 JE4
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 09:11
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59344.0
May 10, 2021
Orbital inclination in deg
29.63965
Longitude of Ascending Node (deg)
42.17926
Arg of perihelion (deg)
278.63257
Eccentricity
0.3452309
Mean distance (AU)
1.815304
Mean Anomaly (deg)
296.93981
Absolute Magnitude (H)
20.1
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
339
Diameter in meters
(range)
164 - 1269
Physical Parameters
Diameter
Initial Diameter Guess using H=20.1 and albedo=0.14 (0.01 to 0.5)
MPC Default
339.2 m
+930.0 / -160.0
Follow-up Details
NEOCP
digest2
score
83
Number of observations
20
Arc length (days)
3.01
Time since last observation (days)
0.44
Spectroscopy Details
Known Taxonomies
None
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