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Minor planet follow-up portal
v. 3.14.2
2021 JR4
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Schedule Spectroscopic Observations
Name
C5KQL02 → 2021 JR4
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 20:56
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59345.0
May 11, 2021
Orbital inclination in deg
2.76896
Longitude of Ascending Node (deg)
37.51867
Arg of perihelion (deg)
211.19209
Eccentricity
0.5136737
Mean distance (AU)
2.0546778
Mean Anomaly (deg)
354.29792
Absolute Magnitude (H)
25.1
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
34
Diameter in meters
(range)
16 - 127
Physical Parameters
Diameter
Initial Diameter Guess using H=25.1 and albedo=0.14 (0.01 to 0.5)
MPC Default
33.92 m
+93.0 / -16.0
Follow-up Details
NEOCP
digest2
score
93
Number of observations
19
Arc length (days)
25.94
Time since last observation (days)
0.72
Spectroscopy Details
Known Taxonomies
None
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