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541699 (2011 WA9)
Classification: Main-belt Asteroid          SPK-ID: 2541699
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300436486200485 2.9313e-07  
a 2.530314071135521 4.451e-08 au
q 2.201262797170409 7.6798e-07 au
i 1.046252265101837 2.0931e-05 deg
node 17.64692442130538 0.00064822 deg
peri 99.20583952993611 0.00087533 deg
M 44.02185900446894 0.00055616 deg
tp 2459020.726385439757
(2020-Jun-20.22638544)
0.0022678 TDB
period 1470.144666882822
4.03
3.8791e-05
1.062e-07
d
yr
n .2448738604502885 6.4612e-09 deg/d
Q 2.859365345100633 5.0298e-08 au
  Orbit Determination Parameters
   # obs. used (total)      68  
   data-arc span      7265 days (19.89 yr)  
   first obs. used      2001-05-23  
   last obs. used      2021-04-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59547  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:30  

Additional Information
 Earth MOID = 1.21772 au 
 Jupiter MOID = 2.21842 au 
 T_jup = 3.439 
[ 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 18.3   .37276 MPO535742 autocmod 2.8

541699 (2011 WA9)          Discovered 2011-Oct-24 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2019-12-13

Alternate Designations
 2011 WA9 = 2013 HO152 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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