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JPL Small-Body Database Browser
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59491 (1999 JO4)
Classification: Main-belt Asteroid          SPK-ID: 2059491
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2599143223531694 3.8058e-08  
a 2.304732487658353 1.1323e-08 au
q 1.705699504923298 8.3503e-08 au
i 11.70796104914953 4.8386e-06 deg
node 238.6245124115805 2.2116e-05 deg
peri 60.76058857948708 2.5005e-05 deg
M 207.6495828203502 1.3005e-05 deg
tp 2459141.341936899238
(2020-Oct-18.84193690)
4.8277e-05 TDB
period 1277.995169872978
3.50
9.4182e-06
2.579e-08
d
yr
n .2816912054806757 2.0759e-09 deg/d
Q 2.903765470393408 1.4266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      974  
   data-arc span      9325 days (25.53 yr)  
   first obs. used      1993-08-15  
   last obs. used      2019-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48999  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:39:00  

Additional Information
 Earth MOID = .724408 au 
 Jupiter MOID = 2.37988 au 
 T_jup = 3.516 
[ 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 14.8   n/a MPO365938  
diameter diameter 2.845 km 0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.113 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.248   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59491 (1999 JO4)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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