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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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Measurements
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Last Update: 2025-Mar-29 06:13
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
60756.0
March 22, 2025
Orbital inclination in deg
5.54413
Longitude of Ascending Node (deg)
156.8567
Arg of perihelion (deg)
90.59739
Eccentricity
0.6010842
Mean distance (AU)
1.7713065
Mean Anomaly (deg)
346.02915
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
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
Absolute Magnitude
E2025-CG0
18.08
Follow-up Details
Number of observations
834
Arc length (days)
7670.00
Time since last observation (days)
12.80
Spectroscopy Details
(Plots)
SMASS Spectra
NIR
Known Taxonomies
None
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