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2182 Semirot (1953 FH1)
Classification: Main-belt Asteroid          SPK-ID: 2002182
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133157339206556 3.5071e-08  
a 3.129958645561496 1.4282e-08 au
q 2.713181680491971 1.1414e-07 au
i 2.258723402067962 3.7975e-06 deg
node 51.03781315135011 8.4781e-05 deg
peri 202.033317952345 8.5929e-05 deg
M 350.7853478551476 1.2472e-05 deg
tp 2459052.270549001340
(2020-Jul-21.77054900)
6.9972e-05 TDB
period 2022.5828764349
5.54
1.3844e-05
3.79e-08
d
yr
n .1779902342664707 1.2183e-09 deg/d
Q 3.54673561063102 1.6184e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2930  
   data-arc span      24668 days (67.54 yr)  
   first obs. used      1953-03-21  
   last obs. used      2020-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44523  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:11:53  

Additional Information
 Earth MOID = 1.69886 au 
 Jupiter MOID = 1.49621 au 
 T_jup = 3.199 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.6   n/a MPO473794  
diameter diameter 24.313 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.328 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Klinglesmith III, D.A.; Hanowell, J.; Risley, E.; Janek, T.; et al. (2013) Minor Planet Bull. 40, 154-156.]
geometric albedo albedo 0.091   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2182 Semirot (1953 FH1)          Discovered 1953-Mar-21 by Goethe Link Observatory at Brooklyn
Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1953 FH1 = 1937 KF = 1942 FN = 1953 GY = 1955 UT = 1972 TM4 = 1975 EU1 = 1975 EU3 = 1978 VB8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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