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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1631694376665256 5.3087e-08  
a 2.359638413003908 1.3313e-08 AU
q 1.974617540057727 1.2377e-07 AU
i 3.311599024964394 5.4049e-06 deg
node 67.90688294916364 0.00010849 deg
peri 51.68547580755233 0.0001099 deg
M 267.378400757388 2.0765e-05 deg
tp 2457141.124896617221
(2015-Apr-28.62489662)
7.7502e-05 JED
period 1323.934846568531
3.62
1.1205e-05
3.068e-08
d
yr
n .2719167041588745 2.3012e-09 deg/d
Q 2.744659285950088 1.5485e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1076  
   data-arc span      22266 days (60.96 yr)  
   first obs. used      1952-09-15  
   last obs. used      2013-09-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53367  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Nov-21 02:31:26  

Additional Information
 Earth MOID = .992534 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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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