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Minor planet follow-up portal
v. 3.14.2
2021 SW
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Schedule Spectroscopic Observations
Name
P21lllF → 2021 SW
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-Sep-27 04:43
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59483.0
Sept. 26, 2021
Orbital inclination in deg
3.4578
Longitude of Ascending Node (deg)
0.30943
Arg of perihelion (deg)
277.2861
Eccentricity
0.339193
Mean distance (AU)
1.2059539
Mean Anomaly (deg)
48.01175
Absolute Magnitude (H)
28.1
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
9
Diameter in meters
(range)
4 - 32
Physical Parameters
Diameter
Initial Diameter Guess using H=28.1 and albedo=0.14 (0.01 to 0.5)
MPC Default
8.52 m
+23.0 / -4.0
Follow-up Details
NEOCP
digest2
score
92
Number of observations
11
Arc length (days)
1.78
Time since last observation (days)
0.27
Spectroscopy Details
Known Taxonomies
None
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