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JPL Small-Body Database Browser
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447329 (2005 YW21)
Classification: Main-belt Asteroid          SPK-ID: 2447329
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .11164239560778 5.8742e-08  
a 3.068078657867208 5.0695e-08 au
q 2.72555100658981 1.8636e-07 au
i 6.29487446200153 6.7105e-06 deg
node 101.1110895391837 6.0517e-05 deg
peri 303.5346069034027 6.8825e-05 deg
M 226.938424245679 3.1467e-05 deg
tp 2459326.018218944877
(2021-Apr-21.51821894)
0.00017568 TDB
period 1962.899938163959
5.37
4.865e-05
1.332e-07
d
yr
n .1834021149018598 4.5456e-09 deg/d
Q 3.410606309144605 5.6354e-08 au
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      4493 days (12.30 yr)  
   first obs. used      2005-12-24  
   last obs. used      2018-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55422  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 06:15:05  

Additional Information
 Earth MOID = 1.74099 au 
 Jupiter MOID = 1.96224 au 
 T_jup = 3.213 
[ 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 16.6   n/a MPO419205  

447329 (2005 YW21)          Discovered 2005-Dec-24 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-10-28

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