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268111 (2004 SW56)
Classification: Main-belt Asteroid          SPK-ID: 2268111
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07337184143160828 5.4916e-08  
a 2.721610650219004 3.0849e-08 au
q 2.521921065152559 1.4181e-07 au
i 7.529825019314857 7.6084e-06 deg
node 26.4757885874781 3.7105e-05 deg
peri 297.3732306614074 6.5862e-05 deg
M 209.4027783560101 5.8275e-05 deg
tp 2459686.543856207736
(2022-Apr-17.04385621)
0.00027216 TDB
period 1639.97572822846
4.49
2.7883e-05
7.634e-08
d
yr
n .2195154439199417 3.7322e-09 deg/d
Q 2.921300235285448 3.3112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      246  
   data-arc span      6560 days (17.96 yr)  
   first obs. used      2002-04-08  
   last obs. used      2020-03-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56431  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:15:10  

Additional Information
 Earth MOID = 1.52139 au 
 Jupiter MOID = 2.32006 au 
 T_jup = 3.342 
[ 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 16.1   n/a MPO470845  
diameter diameter 3.689 km 1.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

268111 (2004 SW56)          Discovered 2004-Sep-16 by LONEOS at Anderson Mesa
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

[ show close-approach data ]
Alternate Designations
 2004 SW56 = 2007 FW22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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