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227456 (2005 WS99)
Classification: Main-belt Asteroid          SPK-ID: 2227456
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1374392158113771 4.178e-08  
a 2.578327288665768 1.9221e-08 au
q 2.22396400800647 1.1535e-07 au
i 6.642014965437095 3.9913e-06 deg
node 76.4979366112368 3.9668e-05 deg
peri 253.8731249312733 4.3389e-05 deg
M 313.7573240851848 1.8733e-05 deg
tp 2459394.743256841045
(2021-Jun-29.24325684)
7.8789e-05 TDB
period 1512.186980519716
4.14
1.691e-05
4.63e-08
d
yr
n .2380657978395459 2.6622e-09 deg/d
Q 2.932690569325065 2.1863e-08 au
  Orbit Determination Parameters
   # obs. used (total)      526  
   data-arc span      6732 days (18.43 yr)  
   first obs. used      2001-12-18  
   last obs. used      2020-05-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59318  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:50  

Additional Information
 Earth MOID = 1.22211 au 
 Jupiter MOID = 2.40797 au 
 T_jup = 3.403 
[ 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 16.25   n/a E2021B55  

227456 (2005 WS99)          Discovered 2005-Nov-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2005 WS99 = 2001 YC50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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