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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1186480101018747 3.7248e-08  
a 2.189688661704249 7.9291e-09 au
q 1.929886459250403 8.1401e-08 au
i .07849436371652718 4.2382e-06 deg
node 99.2922378039556 0.0030587 deg
peri 132.0294099347744 0.0030587 deg
M 127.4378091984632 2.5268e-05 deg
tp 2458181.544614650745
(2018-Mar-04.04461465)
8.2047e-05 TDB
period 1183.510134663791
3.24
6.4284e-06
1.76e-08
d
yr
n .3041799047223774 1.6522e-09 deg/d
Q 2.449490864158095 8.8698e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1336  
   data-arc span      8449 days (23.13 yr)  
   first obs. used      1996-10-16  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50014  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:44:29  

Additional Information
 Earth MOID = .919119 au 
 Jupiter MOID = 2.5363 au 
 T_jup = 3.665 
[ 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-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:
[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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