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4801 Ohre (1989 UR4)
Classification: Main-belt Asteroid          SPK-ID: 2004801
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1612131727228723 4.4621e-08  
a 2.64285578968081 1.4224e-08 au
q 2.216792622777355 1.2195e-07 au
i 2.254113943015968 4.4886e-06 deg
node 66.60674029840473 0.00011484 deg
peri 45.15989051794097 0.00011592 deg
M 336.0210691320423 1.4125e-05 deg
tp 2457505.028794238094
(2016-Apr-26.52879424)
6.1587e-05 JED
period 1569.309579852797
4.30
1.2669e-05
3.469e-08
d
yr
n .229400243662419 1.852e-09 deg/d
Q 3.068918956584266 1.6518e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1437  
   data-arc span      10957 days (30.00 yr)  
   first obs. used      1985-12-17  
   last obs. used      2015-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50222  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:53:47  

Additional Information
 Earth MOID = 1.23397 au 
 Jupiter MOID = 2.04933 au 
 T_jup = 3.374 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a MPO358676  
rotation period rot_per 32.000 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Klinglesmith III, D.A. (2012) Minor Planet Bul. 39, 109-110.]
[Owings, L.E. (2013) Minor Planet Bul. 40, 8-10.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

4801 Ohře           Discovered 1989 Oct. 22 by A. Mrkos at Klet.
Named for a Czech river rising in Germany near the Czech border and continuing through the towns of Karlovy Vary, Žatec and Louny to its confluence with the Labe river. Name proposed by Z. Moravec.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1989 UR4 = 1939 BE = 1952 DA1 = 1985 YQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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