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JPL Small-Body Database Browser
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13694 (1997 WW7)
Classification: Jupiter Trojan          SPK-ID: 2013694
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06866876025717243 5.4165e-08  
a 5.253747294863253 9.3179e-08 au
q 4.89297898142052 3.3889e-07 au
i 5.644511005658863 4.6316e-06 deg
node 249.760302968054 6.0693e-05 deg
peri 164.3792997088495 7.3331e-05 deg
M 301.1744152939182 4.2203e-05 deg
tp 2459319.230289600086
(2021-Apr-14.73028960)
0.00052019 TDB
period 4398.475689597022
12.04
0.00011701
3.204e-07
d
yr
n .08184653625605973 2.1774e-09 deg/d
Q 5.614515608305986 9.9577e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1514  
   data-arc span      11246 days (30.79 yr)  
   first obs. used      1989-02-11  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50796  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:59:18  

Additional Information
 Earth MOID = 3.90449 au 
 Jupiter MOID = .164357 au 
 T_jup = 2.986 
[ 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 10.9   n/a MPO452363  
diameter diameter 29.285 km 0.324 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 30.64 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:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Megna, R.; Wasserman, L.H. (2012) Minor Planet Bull. 39, 183-187.]
geometric albedo albedo 0.108   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

13694 (1997 WW7)          Discovered 1997-Nov-23 by Sato, N. at Chichibu
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WW7 = 1999 BZ22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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