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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06927057297896516 5.4239e-08  
a 5.257674007510212 9.2738e-08 au
q 4.893471916473367 3.3929e-07 au
i 5.644223362385226 4.6066e-06 deg
node 249.7655732495452 6.0567e-05 deg
peri 164.0519986089875 7.2896e-05 deg
M 334.2348275786116 4.1719e-05 deg
tp 2459315.651560326314
(2021-Apr-11.15156033)
0.00051228 TDB
period 4403.407819747068
12.06
0.00011651
3.19e-07
d
yr
n .08175486231040904 2.1631e-09 deg/d
Q 5.621876098547056 9.9162e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1558  
   data-arc span      11306 days (30.95 yr)  
   first obs. used      1989-02-11  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50546  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:43:13  

Additional Information
 Earth MOID = 3.90536 au 
 Jupiter MOID = .163958 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-August); 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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