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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 ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2472296934341249 4.2843e-08  
a 3.161782083296212 2.0885e-08 au
q 2.38009566813738 1.3097e-07 au
i 4.321013203388864 5.8576e-06 deg
node 30.65787393814619 6.8574e-05 deg
peri 58.95877829320819 6.9601e-05 deg
M 186.2245881693687 1.2893e-05 deg
tp 2458591.747611194968
(2019-Apr-18.24761119)
7.8505e-05 JED
period 2053.507664122174
5.62
2.0346e-05
5.57e-08
d
yr
n .1753097912852892 1.737e-09 deg/d
Q 3.943468498455043 2.6048e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1231  
   data-arc span      22731 days (62.23 yr)  
   first obs. used      1953-05-18  
   last obs. used      2015-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54134  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:19:46  

Additional Information
 Earth MOID = 1.39842 au 
 Jupiter MOID = 1.32894 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. 2016-February); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

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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