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47857 (2000 ET155)
Classification: Main-belt Asteroid          SPK-ID: 2047857
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06467939251863113 4.5507e-08  
a 3.052621132205864 2.3613e-08 au
q 2.855179451785253 1.4318e-07 au
i 11.18771158015135 5.9272e-06 deg
node 317.4106005995485 3.2284e-05 deg
peri 156.9431827266364 6.9479e-05 deg
M 268.9142025538339 5.9505e-05 deg
tp 2459093.396745411328
(2020-Aug-31.89674541)
0.00032229 TDB
period 1948.084479942673
5.33
2.2604e-05
6.189e-08
d
yr
n .1847969139462545 2.1442e-09 deg/d
Q 3.250062812626475 2.5141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      963  
   data-arc span      10354 days (28.35 yr)  
   first obs. used      1991-08-02  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5399  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:07:09  

Additional Information
 Earth MOID = 1.87485 au 
 Jupiter MOID = 1.8203 au 
 T_jup = 3.204 
[ 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 14.1   n/a MPO365811  
diameter diameter 6.786 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.658 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.106   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

47857 (2000 ET155)          Discovered 2000-Mar-09 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 ET155 = 1991 PS23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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