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JPL Small-Body Database Browser
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66489 (1999 RS44)
Classification: Main-belt Asteroid          SPK-ID: 2066489
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2675222464954526 6.2876e-08  
a 2.536454486402932 6.5371e-09 au
q 1.85789648406695 1.6204e-07 au
i 5.804594381586042 3.5098e-06 deg
node 56.9651414203015 4.5002e-05 deg
peri 323.0123653664148 4.5557e-05 deg
M 42.17302694178243 7.0305e-06 deg
tp 2458827.649233320278
(2019-Dec-10.14923332)
2.8509e-05 TDB
period 1475.49940132587
4.04
5.7041e-06
1.562e-08
d
yr
n .2439851887954053 9.4322e-10 deg/d
Q 3.215012488738914 8.2859e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1223  
   data-arc span      10320 days (28.25 yr)  
   first obs. used      1991-11-02  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50897  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 14:57:51  

Additional Information
 Earth MOID = .864763 au 
 Jupiter MOID = 2.24949 au 
 T_jup = 3.390 
[ 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 15.3   n/a MPO502575  

66489 (1999 RS44)          Discovered 1999-Sep-15 by Korlevic, K. at Visnjan
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RS44 = 1991 VQ = 1995 YJ25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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