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4425 Bilk (1967 UQ)
Classification: Main-belt Asteroid          SPK-ID: 2004425
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634832078206515 4.1918e-08  
a 2.359746887919424 1.1335e-08 au
q 1.973967897037557 1.0207e-07 au
i 3.311474746847011 5.032e-06 deg
node 67.88576832631358 7.7112e-05 deg
peri 51.58476828035981 7.8975e-05 deg
M 70.61333824833838 1.6156e-05 deg
tp 2457140.794706165932
(2015-Apr-28.29470617)
5.9329e-05 JED
period 1324.026141512499
3.62
9.5398e-06
2.612e-08
d
yr
n .2718979548158729 1.9591e-09 deg/d
Q 2.745525878801291 1.3188e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1449  
   data-arc span      22859 days (62.58 yr)  
   first obs. used      1952-09-15  
   last obs. used      2015-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47433  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 13:23:54  

Additional Information
 Earth MOID = .992015 au 
 Jupiter MOID = 2.34455 au 
 T_jup = 3.532 
[ 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 13.9 mag n/a MPO267725  
rotation period rot_per 5.251 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2008) Minor Planet Bul. 35, 163-167.]

4425 Bilk           Discovered 1967 Oct. 30 by L. Kohoutek at Bergedorf.
Bilk is the district in the city of Düsseldorf where in 1843 Johann Benzenberg established a private observatory that he bequeathed to the city. C. Robert Luther discovered 24 minor planets from the observatory at Bilk during 1852-1890. The observatory was destroyed in 1943.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

[ show close-approach data ]
Alternate Designations
 1967 UQ = 1983 EQ1 = 1985 VE3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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