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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2478284317977583 4.7886e-08  
a 3.162025582962032 2.1373e-08 AU
q 2.378385741432159 1.4796e-07 AU
i 4.321500860704615 6.4727e-06 deg
node 30.67096311226062 8.1921e-05 deg
peri 59.00649947764678 8.3249e-05 deg
M 45.84205580136366 1.4245e-05 deg
tp 2456538.978089285561
(2013-Sep-03.47808929)
8.063e-05 JED
period 2053.744890175662
5.62
2.0822e-05
5.701e-08
d
yr
n .1752895414236226 1.7772e-09 deg/d
Q 3.945665424491905 2.6669e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1084  
   data-arc span      22233 days (60.87 yr)  
   first obs. used      1953-05-18  
   last obs. used      2014-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56457  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:50:54  

Additional Information
 Earth MOID = 1.39772 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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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