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66589 (1999 RE168)
Classification: Main-belt Asteroid          SPK-ID: 2066589
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784996815557664 3.6177e-08  
a 2.432685736458227 8.2622e-09 au
q 1.998452107175179 8.9171e-08 au
i 2.528253377757691 3.9994e-06 deg
node 4.594215380697325 8.1637e-05 deg
peri 358.8661146330734 8.2285e-05 deg
M 206.3280422086806 1.0689e-05 deg
tp 2459792.088282600504
(2022-Jul-31.58828260)
4.2339e-05 TDB
period 1385.885784219583
3.79
7.0604e-06
1.933e-08
d
yr
n .2597616658595877 1.3234e-09 deg/d
Q 2.866919365741276 9.737e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1040  
   data-arc span      7922 days (21.69 yr)  
   first obs. used      1999-07-16  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53084  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:10  

Additional Information
 Earth MOID = .994513 au 
 Jupiter MOID = 2.59043 au 
 T_jup = 3.483 
[ 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 15.66   n/a E2021B10  
diameter diameter 4.437 km 0.963 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.539 h n/a LCDB (Rev. 2020-October); 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.043   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66589 (1999 RE168)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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