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6642 Henze (1990 UE3)
Classification: Main-belt Asteroid          SPK-ID: 2006642
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .247680348981288 4.434e-08  
a 3.1610490001797 2.1285e-08 AU
q 2.37811928066824 1.3663e-07 AU
i 4.321963407731358 5.9891e-06 deg
node 30.66656807767777 7.689e-05 deg
peri 58.95613373022308 7.8059e-05 deg
M 80.97476937942542 1.3253e-05 deg
tp 2456538.765327348222
(2013-Sep-03.26532735)
7.4332e-05 JED
period 2052.793523569767
5.62
2.0734e-05
5.677e-08
d
yr
n .1753707793144081 1.7713e-09 deg/d
Q 3.943978719691159 2.6557e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1140  
   data-arc span      22591 days (61.85 yr)  
   first obs. used      1953-05-18  
   last obs. used      2015-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54764  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:25:49  

Additional Information
 Earth MOID = 1.3978 AU 
 T_jup = 3.152 
[ 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 12.3 mag n/a MPO253409  
rotation period rot_per 4.4696 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

6642 Henze           Discovered 1990 Oct. 26 by T. Urata at Oohira.
Martin Henze (b. 1981), an astronomer at the Max-Planck-Institut für extraterrestrische Physik, has discovered many optical novae in M31 on archival photographic plates at the Tautenburg Observatory. He also works on the discovery and analysis of optical and x-ray transients in nearby galaxies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081113/MPCPages.arcLast Updated: 2008-11-17

[ show close-approach data ]
Alternate Designations
 1990 UE3 = 1974 DH2 = 1975 EN5 = 1984 UP 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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