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JPL Small-Body Database Browser
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35380 (1997 WJ21)
Classification: Main-belt Asteroid          SPK-ID: 2035380
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2205040675691569 4.5105e-08  
a 2.272973864499808 6.9043e-09 au
q 1.771773881899214 1.0267e-07 au
i 5.727897988431494 4.5696e-06 deg
node 209.1021524072699 3.7553e-05 deg
peri 326.424440228019 3.878e-05 deg
M 12.80595211628205 7.5836e-06 deg
tp 2458555.975457795342
(2019-Mar-13.47545780)
2.6374e-05 TDB
period 1251.670711254432
3.43
5.7031e-06
1.561e-08
d
yr
n .2876155819282579 1.3105e-09 deg/d
Q 2.774173847100401 8.4268e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1206  
   data-arc span      15541 days (42.55 yr)  
   first obs. used      1976-10-22  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49838  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:54:06  

Additional Information
 Earth MOID = .779562 au 
 Jupiter MOID = 2.20519 au 
 T_jup = 3.572 
[ 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 15.0   n/a MPO436012  

35380 (1997 WJ21)          Discovered 1997-Nov-30 by Kobayashi, T. at Oizumi
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WJ21 = 1976 UB8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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