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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1632393240806722 5.0376e-08  
a 2.359574261525863 1.5029e-08 AU
q 1.97439895395623 1.1712e-07 AU
i 3.311608796333916 5.1199e-06 deg
node 67.90617397579665 0.00010476 deg
peri 51.70758408572046 0.00010611 deg
M 321.7505423481502 2.0249e-05 deg
tp 2457141.160346516909
(2015-Apr-28.66034652)
7.502e-05 JED
period 1323.880856220152
3.62
1.2648e-05
3.463e-08
d
yr
n .2719277934328966 2.5979e-09 deg/d
Q 2.744749569095496 1.7482e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1085  
   data-arc span      22605 days (61.89 yr)  
   first obs. used      1952-09-15  
   last obs. used      2014-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50924  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:03:36  

Additional Information
 Earth MOID = .99255 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. 2014-Mar-01) 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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