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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2476803474484649 4.2922e-08  
a 3.161049000636821 2.1023e-08 AU
q 2.37811928585747 1.3133e-07 AU
i 4.32196254008515 5.8783e-06 deg
node 30.66659496443401 6.9138e-05 deg
peri 58.95610587065987 7.0166e-05 deg
M 80.97477001346172 1.2474e-05 deg
tp 2456538.765323632660
(2013-Sep-03.26532363)
6.9537e-05 JED
period 2052.793524015051
5.62
2.0478e-05
5.607e-08
d
yr
n .1753707792763675 1.7495e-09 deg/d
Q 3.943978715416172 2.623e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1218  
   data-arc span      22669 days (62.06 yr)  
   first obs. used      1953-05-18  
   last obs. used      2015-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5441  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:54:39  

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 12.4 mag n/a MPO337310  
rotation period rot_per 4.4696 h n/a LCDB (Rev. 2015-May); 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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