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Minor planet follow-up portal
v. 3.14.2
2021 TW9
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Name
C6393D2 → 2021 TW9
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-Oct-11 05:55
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59496.0
Oct. 9, 2021
Orbital inclination in deg
26.6761
Longitude of Ascending Node (deg)
19.13292
Arg of perihelion (deg)
346.97434
Eccentricity
0.1072003
Mean distance (AU)
1.2345611
Mean Anomaly (deg)
8.93257
Absolute Magnitude (H)
24.5
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
45
Diameter in meters
(range)
22 - 167
Physical Parameters
Diameter
Initial Diameter Guess using H=24.5 and albedo=0.14 (0.01 to 0.5)
MPC Default
44.72 m
+123.0 / -21.0
Follow-up Details
NEOCP
digest2
score
74
Number of observations
18
Arc length (days)
1.87
Time since last observation (days)
0.06
Spectroscopy Details
Known Taxonomies
None
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