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227230 (2005 RZ40)
Classification: Main-belt Asteroid          SPK-ID: 2227230
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .177099880238057 5.5157e-08  
a 2.316761878928503 1.6137e-08 au
q 1.906463627630169 1.2592e-07 au
i 3.368436582498673 5.4877e-06 deg
node 42.51001438835581 9.7568e-05 deg
peri 180.5966706325664 0.00010068 deg
M 229.3745791536971 2.8486e-05 deg
tp 2459667.853744324504
(2022-Mar-29.35374432)
0.000103 TDB
period 1288.013825079157
3.53
1.3457e-05
3.684e-08
d
yr
n .2795001055038177 2.9203e-09 deg/d
Q 2.727060130226837 1.8995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      382  
   data-arc span      6666 days (18.25 yr)  
   first obs. used      2002-10-05  
   last obs. used      2021-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4836  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 13:11:13  

Additional Information
 Earth MOID = .896578 au 
 Jupiter MOID = 2.24941 au 
 T_jup = 3.557 
[ 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 16.9   n/a MPO494247  
rotation period rot_per 9.45 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]

227230 (2005 RZ40)          Discovered 2005-Sep-12 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

Alternate Designations
 2005 RZ40 = 2002 TF141 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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