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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1329499003993919 5.7943e-08  
a 3.947150741625652 6.4694e-08 AU
q 3.422377443665135 2.3239e-07 AU
i 3.098404416352142 6.089e-06 deg
node 160.5575183843338 0.00011061 deg
peri 23.46486820737172 0.000113 deg
M 272.7077762402888 2.7081e-05 deg
tp 2457695.039662950037
(2016-Nov-02.53966295)
0.00022529 JED
period 2864.336224842676
7.84
7.042e-05
1.928e-07
d
yr
n .1256835691556333 3.0899e-09 deg/d
Q 4.471924039586168 7.3295e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1133  
   data-arc span      23042 days (63.09 yr)  
   first obs. used      1951-11-28  
   last obs. used      2014-12-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46378  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:06:17  

Additional Information
 Earth MOID = 2.42612 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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