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JPL Small-Body Database Browser
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59499 (1999 JP8)
Classification: Main-belt Asteroid          SPK-ID: 2059499
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1327076957938809 3.6392e-08  
a 2.629083626987162 1.5688e-08 au
q 2.280183996800277 9.3469e-08 au
i 12.88760540121238 4.9645e-06 deg
node 59.08915608082155 1.9874e-05 deg
peri 241.0878310978806 2.8304e-05 deg
M 182.1248421105279 2.0827e-05 deg
tp 2459369.839136196795
(2021-Jun-04.33913620)
9.1523e-05 TDB
period 1557.058851371166
4.26
1.3936e-05
3.815e-08
d
yr
n .2312051337577763 2.0694e-09 deg/d
Q 2.977983257174047 1.777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      929  
   data-arc span      7230 days (19.79 yr)  
   first obs. used      1999-04-10  
   last obs. used      2019-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5248  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:39:03  

Additional Information
 Earth MOID = 1.29483 au 
 Jupiter MOID = 2.24248 au 
 T_jup = 3.353 
[ 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 14.6   n/a MPO381683  
diameter diameter 6.706 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.017 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 0.068   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59499 (1999 JP8)          Discovered 1999-May-14 by CSS at Catalina
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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