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20507 (1999 RU19)
Classification: Main-belt Asteroid          SPK-ID: 2020507
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1184065725407685 3.714e-08  
a 2.190092783797847 7.8315e-09 au
q 1.930771403722074 8.1253e-08 au
i .07845845644508752 4.1899e-06 deg
node 99.31513740173696 0.0029475 deg
peri 132.0639351421709 0.0029476 deg
M 249.0171225068405 2.5502e-05 deg
tp 2459365.460344738619
(2021-May-30.96034474)
8.4872e-05 TDB
period 1183.837787175781
3.24
6.3499e-06
1.739e-08
d
yr
n .3040957164062426 1.6311e-09 deg/d
Q 2.449414163873621 8.7588e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1395  
   data-arc span      8583 days (23.50 yr)  
   first obs. used      1996-10-16  
   last obs. used      2020-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49626  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:02:26  

Additional Information
 Earth MOID = .920007 au 
 Jupiter MOID = 2.5358 au 
 T_jup = 3.664 
[ 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 14.9   n/a MPO296300  
rotation period rot_per 10.283 h n/a LCDB (Rev. 2019-August); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

20507 (1999 RU19)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RU19 = 1998 CD5 = 1998 EZ18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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