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Minor planet follow-up portal
v. 3.15.3
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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Min Altitude
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Measurements
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Last Update: 2025-Apr-18 06:16
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
60779.0
April 14, 2025
Orbital inclination in deg
5.54371
Longitude of Ascending Node (deg)
156.85073
Arg of perihelion (deg)
90.61414
Eccentricity
0.6009765
Mean distance (AU)
1.7707547
Mean Anomaly (deg)
355.64078
Absolute Magnitude (H)
18.14
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
836
Diameter in meters
(range)
404 - 3130
Physical Parameters
Absolute Magnitude
MPO902571
18.06
Diameter
Initial Diameter Guess using H=18.14 and albedo=0.14 (0.01 to 0.5)
MPC Default
836.49 m
+2293.0 / -394.0
Follow-up Details
Number of observations
843
Arc length (days)
7670.00
Time since last observation (days)
35.80
Spectroscopy Details
(Plots)
SMASS Spectra
NIR
Known Taxonomies
None
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