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181217 (2005 SA255)
Classification: Main-belt Asteroid          SPK-ID: 2181217
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .209662049487643 3.8276e-08  
a 2.732129774802682 1.866e-08 au
q 2.159305846751339 1.0946e-07 au
i 14.11809469852417 4.7874e-06 deg
node 166.0796091999298 1.8956e-05 deg
peri 128.9877989868333 2.3337e-05 deg
M 176.7596940557526 1.1989e-05 deg
tp 2458390.600457383974
(2018-Sep-29.10045738)
5.374e-05 TDB
period 1649.492758512051
4.52
1.6899e-05
4.627e-08
d
yr
n .2182489120623623 2.2359e-09 deg/d
Q 3.304953702854025 2.2572e-08 au
  Orbit Determination Parameters
   # obs. used (total)      242  
   data-arc span      6996 days (19.15 yr)  
   first obs. used      2001-11-12  
   last obs. used      2021-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60075  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:41  

Additional Information
 Earth MOID = 1.17224 au 
 Jupiter MOID = 2.109 au 
 T_jup = 3.279 
[ 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 16.61   n/a MPCxxxxx  

181217 (2005 SA255)          Discovered 2005-Sep-22 by NEAT at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2005 SA255 = 2001 VO132 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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