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Minor planet follow-up portal
v. 3.14.3
144411 (2004 EW9)
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Type
NEO (Apollo)
Status
Not Following
Source
Arecibo
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: 2020-Sep-24 19:31
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59098.0
Sept. 6, 2020
Orbital inclination in deg
8.78568
Longitude of Ascending Node (deg)
288.91339
Arg of perihelion (deg)
7.98217
Eccentricity
0.5324849
Mean distance (AU)
1.9179708
Mean Anomaly (deg)
22.17008
Absolute Magnitude (H)
16.5
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
1780
Diameter in meters
(range)
860 - 6661
Physical Parameters
Absolute Magnitude
MPO254119
16.6
Rotation Period
REFERENCE LIST:[Pravec, P.; Wolf, M.; Sarounova, L. (2004) http://www.asu.cas.cz/~ppravec/neo.htm]
LCDB (Rev. 2019-August); Warner et al., 2009
49.94 h
Diameter
Initial Diameter Guess using H=16.5 and albedo=0.14 (0.01 to 0.5)
MPC Default
1780.17 m
+4881.0 / -838.0
Follow-up Details
Number of observations
467
Arc length (days)
102.00
Time since last observation (days)
5720.81
Spectroscopy Details
(Plots)
SMASS Spectra
NIR
Known Taxonomies
None
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