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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1139325280901579 6.2886e-08  
a 3.96796975848008 8.9441e-08 au
q 3.515888932511151 2.9003e-07 au
i 9.074823316913166 6.4558e-06 deg
node 140.1631490453266 4.6258e-05 deg
peri 184.9325471221607 5.7353e-05 deg
M 281.8450406238952 3.7858e-05 deg
tp 2459227.265377611020
(2021-Jan-12.76537761)
0.00031479 TDB
period 2887.027742592025
7.90
9.7613e-05
2.672e-07
d
yr
n .1246957189530799 4.2161e-09 deg/d
Q 4.420050584449009 9.9631e-08 au
  Orbit Determination Parameters
   # obs. used (total)      167  
   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      .58124  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:46:49  

Additional Information
 Earth MOID = 2.50308 au 
 Jupiter MOID = .928778 au 
 T_jup = 3.025 
[ 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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