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21593 (1998 VL27)
Classification: Jupiter Trojan          SPK-ID: 2021593
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05077014820072338 5.2256e-08  
a 5.093510499627667 8.4903e-08 au
q 4.83491221669963 3.2198e-07 au
i 3.355157348054057 4.2983e-06 deg
node 290.9914412039131 0.00010307 deg
peri 128.6288179374493 0.00011772 deg
M 324.3060590300936 5.6493e-05 deg
tp 2459616.809417926327
(2022-Feb-06.30941793)
0.00066039 TDB
period 4198.790785804085
11.50
0.00010498
2.874e-07
d
yr
n .08573897066201609 2.1437e-09 deg/d
Q 5.352108782555704 8.9213e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1292  
   data-arc span      8881 days (24.31 yr)  
   first obs. used      1996-08-18  
   last obs. used      2020-12-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49561  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:49:38  

Additional Information
 Earth MOID = 3.84805 au 
 Jupiter MOID = .0834052 au 
 T_jup = 2.994 
[ 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 11.68   n/a E2021B10  
diameter diameter 21.922 km 1.292 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 10.747 h n/a LCDB (Rev. 2020-October); 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:
[Ryan, E.L.; Sharkey, B.N.L.; Woodward, C.E. (2017) Astron. J. 153, A116.]
[Szabo, Gy.M.; Pal, A.; Kiss, Cs.; Kiss, L.L.; et al. (2017) Astron. Astrophys. 599, A44.]
geometric albedo albedo 0.092   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

21593 (1998 VL27)          Discovered 1998-Nov-10 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 VL27 = 1996 QP2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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