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Minor planet follow-up portal
v. 3.15.2
137126 (1999 CF9)
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Type
NEO (Apollo) [PHA]
Status
Actively Following
Characterization Target
Source
Goldstone
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: 2025-Jan-18 19:10
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
60691.0
Jan. 16, 2025
Orbital inclination in deg
5.54681
Longitude of Ascending Node (deg)
156.86515
Arg of perihelion (deg)
90.55349
Eccentricity
0.6011913
Mean distance (AU)
1.7723158
Mean Anomaly (deg)
318.8939
Absolute Magnitude (H)
18.19
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
817
Diameter in meters
(range)
395 - 3059
Physical Parameters
Diameter
Initial Diameter Guess using H=18.19 and albedo=0.14 (0.01 to 0.5)
MPC Default
817.45 m
+2241.0 / -385.0
Absolute Magnitude
E2023W66
18.14
Follow-up Details
Number of observations
677
Arc length (days)
7305.00
Time since last observation (days)
2319.26
Spectroscopy Details
(Plots)
SMASS Spectra
NIR
Known Taxonomies
None
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