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227020 (2004 XS155)
Classification: Main-belt Asteroid          SPK-ID: 2227020
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 .101516909457253 6.4602e-08  
a 2.846549318379143 2.2331e-08 au
q 2.557576428959642 1.9155e-07 au
i 14.69501161866735 5.2498e-06 deg
node 104.5712206048508 2.411e-05 deg
peri 82.65863686213036 3.6763e-05 deg
M 44.25134216389069 2.6407e-05 deg
tp 2458984.874339532619
(2020-May-15.37433953)
0.00012821 TDB
period 1754.189454429692
4.80
2.0643e-05
5.652e-08
d
yr
n .2052229872269072 2.415e-09 deg/d
Q 3.135522207798643 2.4598e-08 au
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      7021 days (19.22 yr)  
   first obs. used      2001-03-25  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5314  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 02:29:36  

Additional Information
 Earth MOID = 1.61054 au 
 Jupiter MOID = 2.03028 au 
 T_jup = 3.251 
[ 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 15.55   n/a E2021B55  
diameter diameter 2.423 km 0.353 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.228   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227020 (2004 XS155)          Discovered 2004-Dec-12 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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