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JPL Small-Body Database Browser
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20543 (1999 RZ98)
Classification: Outer Main-belt Asteroid          SPK-ID: 2020543
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03330690720366374 5.7793e-08  
a 3.220973539236911 2.721e-08 au
q 3.113692872460091 1.877e-07 au
i 21.82207679538419 5.9668e-06 deg
node 20.82487646485555 1.4036e-05 deg
peri 294.4001567480302 0.00010196 deg
M 195.1326578197316 0.00010522 deg
tp 2459567.466210456237
(2021-Dec-18.96621046)
0.00062174 TDB
period 2111.44203066984
5.78
2.6756e-05
7.325e-08
d
yr
n .1704995897452096 2.1605e-09 deg/d
Q 3.328254206013731 2.8117e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1303  
   data-arc span      13331 days (36.50 yr)  
   first obs. used      1982-11-11  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47542  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:53:17  

Additional Information
 Earth MOID = 2.15175 au 
 Jupiter MOID = 1.78643 au 
 T_jup = 3.075 
[ 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 12.6   n/a MPO384930  
diameter diameter 18.073 km 0.186 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.506 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 0.050   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20543 (1999 RZ98)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RZ98 = 1982 VR9 = 1991 GL6 = 1993 SQ15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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