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Minor planet follow-up portal
v. 3.14.2
2021 SD3
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Name
P21lKhs → 2021 SD3
Type
NEO (Aten)
Status
Not Following
Source
NASA
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: 2022-Aug-22 06:29
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59552.0
Dec. 4, 2021
Orbital inclination in deg
6.30791
Longitude of Ascending Node (deg)
186.02441
Arg of perihelion (deg)
37.73861
Eccentricity
0.1665337
Mean distance (AU)
0.97736
Mean Anomaly (deg)
194.89504
Absolute Magnitude (H)
25.14
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
33
Diameter in meters
(range)
16 - 125
Physical Parameters
Diameter
Initial Diameter Guess using H=25.14 and albedo=0.14 (0.01 to 0.5)
MPC Default
33.3 m
+91.0 / -16.0
Absolute Magnitude
autocmod 2.9e
MPO656719
25.12
+/- 0.32072
Follow-up Details
NEOCP
digest2
score
98
Number of observations
23
Arc length (days)
9.00
Time since last observation (days)
55.26
Spectroscopy Details
Known Taxonomies
None
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