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227503 (2005 XR84)
Classification: Main-belt Asteroid          SPK-ID: 2227503
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .221818151668774 6.295e-08  
a 2.613428754238024 2.9211e-08 au
q 2.033722818454919 1.7278e-07 au
i 15.42087626212215 8.7291e-06 deg
node 13.92651647342976 1.9992e-05 deg
peri 39.17576406395775 2.9805e-05 deg
M 225.7249290648061 2.5894e-05 deg
tp 2459776.082146226853
(2022-Jul-15.58214623)
0.00011826 TDB
period 1543.17231931811
4.22
2.5872e-05
7.083e-08
d
yr
n .2332856774926309 3.9112e-09 deg/d
Q 3.193134690021129 3.569e-08 au
  Orbit Determination Parameters
   # obs. used (total)      280  
   data-arc span      6690 days (18.32 yr)  
   first obs. used      2002-02-19  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58804  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 02:26:25  

Additional Information
 Earth MOID = 1.06341 au 
 Jupiter MOID = 2.3304 au 
 T_jup = 3.323 
[ 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 16.27   n/a E2021B55  
rotation period rot_per 30.238 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

227503 (2005 XR84)          Discovered 2005-Dec-10 by CSS at Catalina
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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