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JPL Small-Body Database Browser
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20514 (1999 RD34)
Classification: Main-belt Asteroid          SPK-ID: 2020514
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1236301881754637 5.9857e-08  
a 3.062057150284957 1.9869e-08 au
q 2.683494448591204 1.8721e-07 au
i 3.214345313626378 6.5072e-06 deg
node 3.877198456989025 7.1797e-05 deg
peri 1.656214263952966 7.3732e-05 deg
M 234.5947577055466 1.7054e-05 deg
tp 2459282.260061279328
(2021-Mar-08.76006128)
9.5212e-05 TDB
period 1957.124100795373
5.36
1.9049e-05
5.215e-08
d
yr
n .1839433686671665 1.7903e-09 deg/d
Q 3.440619851978711 2.2325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1114  
   data-arc span      8569 days (23.46 yr)  
   first obs. used      1995-11-23  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55809  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:52:58  

Additional Information
 Earth MOID = 1.68085 au 
 Jupiter MOID = 2.01394 au 
 T_jup = 3.219 
[ 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 13.9   n/a MPO266063  
diameter diameter 4.996 km 0.373 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.291 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 0.162   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20514 (1999 RD34)          Discovered 1999-Sep-07 by Korlevic, K. at Visnjan
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RD34 = 1997 GW8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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