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2708 Burns (1981 WT)
Classification: Main-belt Asteroid          SPK-ID: 2002708
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1777334815648159 3.8551e-08  
a 3.082147811475245 1.4811e-08 au
q 2.534346950244371 1.2322e-07 au
i 2.782771991889026 3.85e-06 deg
node 111.6451824488706 9.5515e-05 deg
peri 331.0631773095589 9.6341e-05 deg
M 13.70776505178655 1.1737e-05 deg
tp 2458925.243715659254
(2020-Mar-16.74371566)
6.4419e-05 TDB
period 1976.417181087995
5.41
1.4246e-05
3.9e-08
d
yr
n .1821477790442118 1.3129e-09 deg/d
Q 3.629948672706118 1.7443e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2469  
   data-arc span      25846 days (70.76 yr)  
   first obs. used      1950-02-11  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45515  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:07:57  

Additional Information
 Earth MOID = 1.5508 au 
 Jupiter MOID = 1.61125 au 
 T_jup = 3.201 
[ 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 12.1   n/a MPO337271  
diameter diameter 20.085 km 0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.315 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.084   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2708 Burns (1981 WT)          Discovered 1981-Nov-24 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

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Alternate Designations
 1981 WT = 1951 GG = 1961 DN = 1965 YB = 1978 EL3 = A912 AE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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