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JPL Small-Body Database Browser
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35821 (1999 JW50)
Classification: Main-belt Asteroid          SPK-ID: 2035821
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 .1253666107124149 6.5261e-08  
a 2.481966327024683 1.0831e-08 au
q 2.170810620703257 1.5871e-07 au
i 5.943599192269649 5.6151e-06 deg
node 190.8940081293752 3.7024e-05 deg
peri 199.4015240234638 4.0274e-05 deg
M 349.0452656776646 1.5653e-05 deg
tp 2459043.960188248143
(2020-Jul-13.46018825)
6.2202e-05 TDB
period 1428.21060821454
3.91
9.3491e-06
2.56e-08
d
yr
n .2520636647910419 1.65e-09 deg/d
Q 2.793122033346108 1.2189e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1241  
   data-arc span      9340 days (25.57 yr)  
   first obs. used      1994-02-03  
   last obs. used      2019-08-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5638  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:57:31  

Additional Information
 Earth MOID = 1.17671 au 
 Jupiter MOID = 2.64079 au 
 T_jup = 3.459 
[ 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 14.3   n/a MPO436016  
rotation period rot_per 4.931 h n/a LCDB (Rev. 2019-August); 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.]

35821 (1999 JW50)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JW50 = 2000 QY8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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