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Minor planet follow-up portal
v. 3.15.2
12923 Zephyr (1999 GK4)
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Schedule Spectroscopic Observations
Type
NEO (Apollo) [PHA]
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)
Site
Min Altitude
Check Spectroscopic Feasibility
Create LC Plot
Recent Blocks Scheduled
2021-10-12T00:19:00
2021-10-13T00:19:00
SIN
Req: 2678043
2021-10-12T00:20:00
2021-10-13T00:20:00
SIN
Req: 2678044
2021-10-13T00:44:00
2021-10-14T00:44:00
SIN
Req: 2678874
Measurements
Show Measurements
Plot Visibility
Last Update: 2021-Oct-13 00:25
Orbital Elements
MPC Minor Planet
Epoch of elements (MJD)
59400.0
July 5, 2021
Orbital inclination in deg
5.30536
Longitude of Ascending Node (deg)
168.18783
Arg of perihelion (deg)
147.09268
Eccentricity
0.4921764
Mean distance (AU)
1.9616742
Mean Anomaly (deg)
341.35564
Absolute Magnitude (H)
15.75
Slope Parameter (G)
0.15
Albedo (average)
0.17
Albedo (range)
0.01 - 0.60
Diameter in meters (average)
2515
Diameter in meters
(range)
1215 - 9409
Physical Parameters
Phase Slope
MPC Default
0.15
Absolute Magnitude
MPO647157
15.75
Diameter
urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)
2.06 km
+/- 0.013
Rotation Period
REFERENCE LIST:[Pravec, P.; Wolf, M.; Sarounova, L. (1999) http://www.asu.cas.cz/~ppravec/neo.htm]
LCDB (Rev. 2020-October); Warner et al., 2009
3.891 h
Albedo
urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)
0.199
+/- 0.034
Follow-up Details
Number of observations
2128
Arc length (days)
24247.00
Time since last observation (days)
34.01
Spectroscopy Details
Known Taxonomies
None
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