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JPL Small-Body Database Browser
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27996 (1997 WJ5)
Classification: Main-belt Asteroid          SPK-ID: 2027996
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1708730252237046 4.6478e-08  
a 3.16114058714573 2.3633e-08 au
q 2.620986931862701 1.476e-07 au
i 1.694934852448885 4.346e-06 deg
node 151.8714536443585 0.00017438 deg
peri 91.86339958862924 0.00017505 deg
M 98.47940463052031 2.0238e-05 deg
tp 2458038.925916787872
(2017-Oct-12.42591679)
0.00011157 TDB
period 2052.882739440442
5.62
2.3021e-05
6.303e-08
d
yr
n .175363157906489 1.9665e-09 deg/d
Q 3.70129424242876 2.7671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      928  
   data-arc span      10287 days (28.16 yr)  
   first obs. used      1991-09-29  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56771  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:10:17  

Additional Information
 Earth MOID = 1.60851 au 
 Jupiter MOID = 1.32196 au 
 T_jup = 3.181 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456628.5 (2013-Dec-02.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723004621721564 4.5876e-08  
q 2.615172313269134 1.4561e-07 au
tp 2455991.203404296668
(2012-Mar-04.70340430)
0.00010034 TDB
node 151.8787082520507 0.00017438 deg
peri 92.61600964700945 0.00017507 deg
i 1.694125965649318 4.349e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      928  
   data-arc span      10287 days (28.16 yr)  
   first obs. used      1991-09-29  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56771  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:10:17  

Additional Information
 Jupiter MOID = 1.32196 au 
 T_jup = 3.181 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.10456696367064E-15 -6.620074162479406E-15 -1.392962890287439E-12 8.319644953709465E-16 -2.090038186814339E-13 3.767051104230638E-16
q -6.620074162479406E-15 2.120204281705389E-14 5.20979976448665E-12 1.805697449519018E-16 7.998725006108764E-13 -1.061882240780659E-15
tp -1.392962890287439E-12 5.20979976448665E-12 1.006839876101174E-8 1.773773308551382E-11 1.605253567240268E-9 1.449040991911566E-13
node 8.319644953709465E-16 1.805697449519018E-16 1.773773308551382E-11 3.040818510406767E-8 -3.039174303895678E-8 1.702066239493961E-10
peri -2.090038186814339E-13 7.998725006108764E-13 1.605253567240268E-9 -3.039174303895678E-8 3.064820922593253E-8 -1.701038689915162E-10
i 3.767051104230638E-16 -1.061882240780659E-15 1.449040991911566E-13 1.702066239493961E-10 -1.701038689915162E-10 1.891345685523676E-11

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 14.5   n/a MPO412385  
diameter diameter 7.398 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27996 (1997 WJ5)          Discovered 1997-Nov-23 by Spacewatch at Kitt Peak
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WJ5 = 2000 EV41 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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