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20598 (1999 RO194)
Classification: Main-belt Asteroid          SPK-ID: 2020598
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .108801905706459 4.8872e-08  
a 2.800090033565244 1.3344e-08 au
q 2.495434901763683 1.3275e-07 au
i 3.342716795893824 4.1279e-06 deg
node 213.9136967252903 6.1619e-05 deg
peri 132.554824641178 6.323e-05 deg
M 202.5982703059846 1.569e-05 deg
tp 2459948.778764184842
(2023-Jan-04.27876419)
7.6833e-05 TDB
period 1711.419281288784
4.69
1.2233e-05
3.349e-08
d
yr
n .2103517261584795 1.5036e-09 deg/d
Q 3.104745165366805 1.4795e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1722  
   data-arc span      11011 days (30.15 yr)  
   first obs. used      1990-11-19  
   last obs. used      2021-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:13:07  

Additional Information
 Earth MOID = 1.48823 au 
 Jupiter MOID = 2.29077 au 
 T_jup = 3.314 
[ 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 14.03   n/a E2021B10  
diameter diameter 4.008 km 1.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.276   0.240 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20598 (1999 RO194)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RO194 = 1998 KH64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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