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181277 (2005 YA2)
Classification: Main-belt Asteroid          SPK-ID: 2181277
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1506052305506646 5.1681e-08  
a 3.145523933406328 3.6931e-08 au
q 2.671791576213034 1.687e-07 au
i 3.493118158811769 6.2299e-06 deg
node 17.1367394100921 9.0646e-05 deg
peri 298.3839441785009 9.274e-05 deg
M 348.3384267043023 2.0281e-05 deg
tp 2459266.507390405203
(2021-Feb-21.00739041)
0.00011522 TDB
period 2037.689078766058
5.58
3.5887e-05
9.825e-08
d
yr
n .1766707216284446 3.1114e-09 deg/d
Q 3.619256290599621 4.2493e-08 au
  Orbit Determination Parameters
   # obs. used (total)      260  
   data-arc span      7106 days (19.46 yr)  
   first obs. used      1999-11-10  
   last obs. used      2019-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55435  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:57  

Additional Information
 Earth MOID = 1.65855 au 
 Jupiter MOID = 1.68532 au 
 T_jup = 3.189 
[ 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 15.8   n/a MPO469951  
diameter diameter 4.935 km 1.217 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.029   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181277 (2005 YA2)          Discovered 2005-Dec-21 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2005 YA2 = 1999 VH140 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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