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4230 van den Bergh (1973 ST1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2004230
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1328527750771389 6.6578e-08  
a 3.945943102346028 6.1285e-08 AU
q 3.421713610902864 2.6185e-07 AU
i 3.098399626236335 6.788e-06 deg
node 160.564683661195 0.0001154 deg
peri 23.60112682253011 0.0001177 deg
M 247.3979836016346 2.6907e-05 deg
tp 2457696.005632619913
(2016-Nov-03.50563262)
0.00022475 JED
period 2863.021800627796
7.84
6.6699e-05
1.826e-07
d
yr
n .1257412709610036 2.9294e-09 deg/d
Q 4.470172593789193 6.9427e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1117  
   data-arc span      22719 days (62.20 yr)  
   first obs. used      1951-11-28  
   last obs. used      2014-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49844  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Feb-19 17:59:26  

Additional Information
 Earth MOID = 2.42469 AU 
 T_jup = 3.042 
[ 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 11.70 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
diameter diameter 37.75 km 2.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
geometric albedo albedo 0.0259   0.005 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3

4230 van den Bergh (1973 ST1)          Discovered 1973-Sep-19 by van Houten and Gehrels at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1973 ST1 = 1978 JB2 = 1979 OD 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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