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JPL Small-Body Database Browser
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1781 Van Biesbroeck (A906 UB)
Classification: Main-belt Asteroid          SPK-ID: 2001781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1083277679193608 3.9612e-08  
a 2.394281278774515 7.315e-09 au
q 2.134914132073759 9.5374e-08 au
i 6.949510960987965 4.072e-06 deg
node 44.62569514837595 3.1971e-05 deg
peri 342.6387014302183 3.6271e-05 deg
M 130.5495478607363 1.7573e-05 deg
tp 2458109.779667681075
(2017-Dec-22.27966768)
6.5486e-05 TDB
period 1353.197483481631
3.70
6.2015e-06
1.698e-08
d
yr
n .2660365574090183 1.2192e-09 deg/d
Q 2.653648425475271 8.1075e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2404  
   data-arc span      41113 days (112.56 yr)  
   first obs. used      1906-10-17  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44195  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:27:11  

Additional Information
 Earth MOID = 1.14026 au 
 Jupiter MOID = 2.77098 au 
 T_jup = 3.512 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9   n/a MPO473788  
diameter diameter 8.500 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.203   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1781 Van Biesbroeck (A906 UB)          Discovered 1906-Oct-17 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A906 UB = 1954 SZ = 1958 VP = 1969 TM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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