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277373 (2005 UD20)
Classification: Main-belt Asteroid          SPK-ID: 2277373
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2341652222702779 7.2083e-08  
a 3.068485162442178 4.1538e-08 au
q 2.349952652345856 2.4322e-07 au
i 4.941151158449515 5.4604e-06 deg
node 45.01875614514822 7.0169e-05 deg
peri 296.4318326513776 7.0863e-05 deg
M 233.668292385255 1.2949e-05 deg
tp 2459289.460516960731
(2021-Mar-15.96051696)
8.0977e-05 TDB
period 1963.290062240197
5.38
3.9866e-05
1.091e-07
d
yr
n .1833656711883035 3.7234e-09 deg/d
Q 3.787017672538501 5.1265e-08 au
  Orbit Determination Parameters
   # obs. used (total)      355  
   data-arc span      7164 days (19.61 yr)  
   first obs. used      1999-09-13  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53479  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 15:43:24  

Additional Information
 Earth MOID = 1.34624 au 
 Jupiter MOID = 1.64518 au 
 T_jup = 3.183 
[ 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 15.5   n/a MPO437263  
diameter diameter 4.249 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 177.552 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.068   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

277373 (2005 UD20)          Discovered 2005-Oct-22 by Spacewatch at Kitt Peak
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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