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2634 James Bradley (1982 DL)
Classification: Outer Main-belt Asteroid          SPK-ID: 2002634
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04880082255124005 3.2537e-08  
a 3.46014231214329 2.0366e-08 au
q 3.291284521166348 1.1534e-07 au
i 6.421122330371469 3.6798e-06 deg
node 133.3466681810769 3.4463e-05 deg
peri 333.4669566830752 5.2812e-05 deg
M 15.03210105875783 4.0191e-05 deg
tp 2458902.335026250475
(2020-Feb-22.83502625)
0.0002623 TDB
period 2350.928217665208
6.44
2.0756e-05
5.683e-08
d
yr
n .1531310047218409 1.352e-09 deg/d
Q 3.629000103120231 2.136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2894  
   data-arc span      42284 days (115.77 yr)  
   first obs. used      1905-02-09  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43839  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:07:29  

Additional Information
 Earth MOID = 2.3096 au 
 Jupiter MOID = 1.43782 au 
 T_jup = 3.123 
[ 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 10.5   n/a MPO256882  
diameter diameter 33.726 km 0.488 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.284 h n/a LCDB (Rev. 2020-October); 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:
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
[Ferrero, A.; Bonamico, R. (2020) Minor Planet Bull. 47, 147-148.]
geometric albedo albedo 0.107   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2634 James Bradley (1982 DL)          Discovered 1982-Feb-21 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1982 DL = 1931 FL = 1961 XH = 1963 FC = 1975 AO = 1976 GB1 = 1977 KP = A905 CC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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