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JPL Small-Body Database Browser
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21604 (1999 BS3)
Classification: Main-belt Asteroid          SPK-ID: 2021604
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02471882595572951 3.5374e-08  
a 2.860564676186263 1.5498e-08 au
q 2.789854875820507 9.7284e-08 au
i 2.336995722992401 5.9126e-06 deg
node 161.643854916101 0.00010587 deg
peri 295.4344550816087 0.00016842 deg
M 186.5228943684395 0.00013111 deg
tp 2459852.060975549891
(2022-Sep-29.56097555)
0.00064456 TDB
period 1767.160860114029
4.84
1.4361e-05
3.932e-08
d
yr
n .2037165988255141 1.6555e-09 deg/d
Q 2.931274476552019 1.5881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1316  
   data-arc span      14826 days (40.59 yr)  
   first obs. used      1978-11-29  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54467  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:27:39  

Additional Information
 Earth MOID = 1.80772 au 
 Jupiter MOID = 2.09228 au 
 T_jup = 3.300 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO302197  

21604 (1999 BS3)          Discovered 1999-Jan-19 by Korlevic, K. at Visnjan
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 BS3 = 1978 WO9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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