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JPL Small-Body Database Browser
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4230 van den Bergh (1973 ST1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2004230
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336019373752898 3.7805e-08  
a 3.945797983967374 3.1668e-08 au
q 3.41863172881782 1.4874e-07 au
i 3.100465924430627 4.5432e-06 deg
node 160.4411495628026 7.0073e-05 deg
peri 20.43939352567895 7.1621e-05 deg
M 116.2725588407043 1.4802e-05 deg
tp 2457675.854147077771
(2016-Oct-14.35414708)
0.00011576 TDB
period 2862.863863760359
7.84
3.4465e-05
9.436e-08
d
yr
n .1257482077848933 1.5138e-09 deg/d
Q 4.472964239116928 3.5899e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1940  
   data-arc span      24807 days (67.92 yr)  
   first obs. used      1951-11-28  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47025  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:34:00  

Additional Information
 Earth MOID = 2.42249 au 
 Jupiter MOID = .486886 au 
 T_jup = 3.042 
[ 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 11.8   n/a MPO452224  
diameter diameter 28.461 km 0.562 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 87.918 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.050   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

4230 van den Bergh (1973 ST1)          Discovered 1973-Sep-19 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1973 ST1 = 1978 JB2 = 1979 OD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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