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20499 (1999 RZ2)
Classification: Main-belt Asteroid          SPK-ID: 2020499
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07798533008957266 3.8072e-08  
a 2.867819177425979 1.2638e-08 au
q 2.644171352237207 1.0981e-07 au
i .9720965671487888 3.9124e-06 deg
node 318.604676178009 0.00022926 deg
peri 101.1621153435836 0.00023096 deg
M 86.92851476694123 2.6826e-05 deg
tp 2458772.162761477444
(2019-Oct-15.66276148)
0.00013205 TDB
period 1773.887501489475
4.86
1.1726e-05
3.21e-08
d
yr
n .2029440985957226 1.3415e-09 deg/d
Q 3.091467002614751 1.3623e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1650  
   data-arc span      16095 days (44.07 yr)  
   first obs. used      1977-02-19  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5029  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:22:31  

Additional Information
 Earth MOID = 1.6561 au 
 Jupiter MOID = 2.15192 au 
 T_jup = 3.294 
[ 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 14.28   n/a E2021B10  
diameter diameter 4.173 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.232   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20499 (1999 RZ2)          Discovered 1999-Sep-06 by Korlevic, K. at Visnjan
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RZ2 = 1977 DX5 = 1997 GK15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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