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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1085856541320551 4.8887e-08  
a 2.800634150588775 1.333e-08 au
q 2.496525459362521 1.3283e-07 au
i 3.34230003507705 4.1272e-06 deg
node 213.921789106677 6.1637e-05 deg
peri 132.5144707975959 6.3255e-05 deg
M 160.5736356758095 1.5609e-05 deg
tp 2458236.919661537214
(2018-Apr-28.41966154)
7.2365e-05 TDB
period 1711.918153248959
4.69
1.2222e-05
3.346e-08
d
yr
n .2102904273295865 1.5013e-09 deg/d
Q 3.10474284181503 1.4777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1720  
   data-arc span      10794 days (29.55 yr)  
   first obs. used      1990-11-19  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48523  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:01:52  

Additional Information
 Earth MOID = 1.49111 au 
 Jupiter MOID = 2.29059 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 14.0   n/a MPO272738  
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

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