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8338 Ralhan (1985 FE3)
Classification: Main-belt Asteroid          SPK-ID: 2008338
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1876136173564478 5.1096e-08  
a 2.256721679851254 1.2651e-08 AU
q 1.833329962127641 1.1512e-07 AU
i 7.957026606515414 5.7283e-06 deg
node 91.77727125051059 4.209e-05 deg
peri 140.2839484621009 4.5063e-05 deg
M 230.4986827665607 1.8307e-05 deg
tp 2457445.937846172259
(2016-Feb-27.43784617)
6.4995e-05 JED
period 1238.27022031716
3.39
1.0412e-05
2.851e-08
d
yr
n .2907281416392238 2.4446e-09 deg/d
Q 2.680113397574867 1.5024e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1061  
   data-arc span      11038 days (30.22 yr)  
   first obs. used      1985-02-19  
   last obs. used      2015-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47046  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:01:15  

Additional Information
 Earth MOID = .831267 AU 
 T_jup = 3.587 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO337326  
rotation period rot_per 5.2745 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Published Reference List:
[Brinsfield, J.W. (2009) Minor Planet Bul. 36, 169.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pravec, P.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm]

8338 Ralhan           Discovered 1985 Mar. 27 at Brorfelde.
Danish physicist Philip Ralhan Bidstrup (b. 1979) obtained a doctorate from the University of Copenhagen in 2008 based on a feasibility study for detecting and observing small minor planets by a spacecraft in deep space. The name was suggested by A. C. Andersen.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080520/MPCPages.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 1985 FE3 = 1985 DG = 1992 KG 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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