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277327 (2005 SQ254)
Classification: Outer Main-belt Asteroid          SPK-ID: 2277327
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1132990381916202 6.2851e-08  
a 3.980389002033351 1.0056e-07 au
q 3.529414756474469 2.9429e-07 au
i 9.108700075779035 6.419e-06 deg
node 139.8422226114576 4.5847e-05 deg
peri 183.0148473324679 5.6292e-05 deg
M 333.5285624376449 3.7845e-05 deg
tp 2459213.785695426094
(2020-Dec-30.28569543)
0.00030962 TDB
period 2900.59239028962
7.94
0.00010992
3.009e-07
d
yr
n .1241125782461473 4.7033e-09 deg/d
Q 4.431363247592232 1.1195e-07 au
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      5907 days (16.17 yr)  
   first obs. used      2003-05-26  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55646  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 14:11:12  

Additional Information
 Earth MOID = 2.51703 au 
 Jupiter MOID = .915706 au 
 T_jup = 3.023 
[ 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 14.7   n/a MPO433793  
diameter diameter 7.117 km 0.687 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.042   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

277327 (2005 SQ254)          Discovered 2005-Sep-22 by NEAT at Palomar
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Alternate Designations
 2005 SQ254 = 2005 OT26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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