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4175 Billbaum (1985 GX)
Classification: Main-belt Asteroid          SPK-ID: 2004175
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1857334503998498 2.8461e-08  
a 2.683450308989008 1.1401e-08 au
q 2.185043824123936 7.7379e-08 au
i 13.61122894852527 3.5728e-06 deg
node 163.4022277857389 1.5952e-05 deg
peri 316.6590032693725 1.9244e-05 deg
M 59.03282782460079 1.2001e-05 deg
tp 2458737.212736855256
(2019-Sep-10.71273686)
5.2723e-05 TDB
period 1605.605189941596
4.40
1.0233e-05
2.802e-08
d
yr
n .2242145218857289 1.4289e-09 deg/d
Q 3.181856793854079 1.3519e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2082  
   data-arc span      24990 days (68.42 yr)  
   first obs. used      1951-08-07  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45005  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:25:53  

Additional Information
 Earth MOID = 1.21994 au 
 Jupiter MOID = 1.94555 au 
 T_jup = 3.311 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO384790  
diameter diameter 8.873 km 0.278 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.73 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ditteon, R.; West, J. (2011) Minor Planet Bull. 38, 214-217.]
[Megna, R. (2011) http://www.macastronomy.com/MacAstronomy.com/Asteroids.html]
geometric albedo albedo 0.270   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4175 Billbaum (1985 GX)          Discovered 1985-Apr-15 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1985 GX = 1974 UE = 1978 QF2 = 1978 RL4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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