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Minor planet follow-up portal
v. 3.14.2
2021 JD9
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Name
ST21E25 → 2021 JD9
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)
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Measurements
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Last Update: 2021-May-15 23:41
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59347.0
May 13, 2021
Orbital inclination in deg
0.65375
Longitude of Ascending Node (deg)
198.81755
Arg of perihelion (deg)
345.44699
Eccentricity
0.4872874
Mean distance (AU)
1.7931957
Mean Anomaly (deg)
15.69394
Absolute Magnitude (H)
26.6
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
17
Diameter in meters
(range)
8 - 64
Physical Parameters
Diameter
Initial Diameter Guess using H=26.6 and albedo=0.14 (0.01 to 0.5)
MPC Default
17.0 m
+47.0 / -8.0
Follow-up Details
NEOCP
digest2
score
10
Number of observations
69
Arc length (days)
5.46
Time since last observation (days)
1.06
Spectroscopy Details
Known Taxonomies
None
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