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541781 (2011 YW18)
Classification: Main-belt Asteroid          SPK-ID: 2541781
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06882752135768894 1.0039e-07  
a 2.217642130045251 2.8618e-08 au
q 2.065007318975851 2.0627e-07 au
i 5.553333767063436 7.9047e-06 deg
node 300.4098538919263 8.1346e-05 deg
peri 271.9945137429302 0.00011067 deg
M 154.1659343361388 7.5189e-05 deg
tp 2458683.939087187478
(2019-Jul-19.43908719)
0.00025639 TDB
period 1206.245266915076
3.30
2.335e-05
6.393e-08
d
yr
n .2984467669006367 5.7771e-09 deg/d
Q 2.370276941114652 3.0588e-08 au
  Orbit Determination Parameters
   # obs. used (total)      104  
   data-arc span      4739 days (12.97 yr)  
   first obs. used      2007-10-21  
   last obs. used      2020-10-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .62347  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:24:24  

Additional Information
 Earth MOID = 1.06646 au 
 Jupiter MOID = 2.6203 au 
 T_jup = 3.643 
[ 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 17.91   .25728 E2021B25 autocmod 2.8

541781 (2011 YW18)          Discovered 2009-Jan-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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