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JPL Small-Body Database Browser
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27050 (1998 SW4)
Classification: Main-belt Asteroid          SPK-ID: 2027050
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1529610090729197 4.71e-08  
a 2.184520232358231 7.3998e-09 au
q 1.850373813276507 1.0243e-07 au
i 5.847030704632864 4.9918e-06 deg
node 32.88184524233669 4.2706e-05 deg
peri 354.7117558078455 4.5069e-05 deg
M 120.7285885773496 1.5981e-05 deg
tp 2458205.005765698751
(2018-Mar-27.50576570)		 5.1651e-05 TDB
period 1179.322362882009
3.23		 5.9922e-06
1.641e-08		 d
yr
n .3052600470665526 1.551e-09 deg/d
Q 2.518666651439955 8.5317e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1227  
   data-arc span      8044 days (22.02 yr)  
   first obs. used      1997-04-29  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .547  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:26:43  

Additional Information
 Earth MOID = .854453 au 
 Jupiter MOID = 2.92159 au 
 T_jup = 3.656 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO421863  
diameter diameter 2.576 km 0.247 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.266   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27050 (1998 SW4)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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