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17621 (1995 WD1)
Classification: Main-belt Asteroid          SPK-ID: 2017621
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1387813631386133 3.6028e-08  
a 2.850216876850338 1.1424e-08 au
q 2.454659893440367 1.0159e-07 au
i 2.4778947687182 3.9958e-06 deg
node 195.6979291268621 7.2202e-05 deg
peri 217.2334205900985 7.3598e-05 deg
M 80.1206532876912 1.2713e-05 deg
tp 2458809.337449798721
(2019-Nov-21.83744980)
6.1968e-05 TDB
period 1757.580752204051
4.81
1.0567e-05
2.893e-08
d
yr
n .2048270041354008 1.2314e-09 deg/d
Q 3.245773860260309 1.3009e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1583  
   data-arc span      9259 days (25.35 yr)  
   first obs. used      1995-11-16  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50081  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:34:50  

Additional Information
 Earth MOID = 1.46544 au 
 Jupiter MOID = 2.10814 au 
 T_jup = 3.290 
[ 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 14.28   n/a MPCxxxxx  

17621 (1995 WD1)          Discovered 1995-Nov-16 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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