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22009 (1999 XK77)
Classification: Jupiter Trojan          SPK-ID: 2022009
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 .02716163357556458 4.7172e-08  
a 5.216058480303908 9.9163e-08 au
q 5.074381811153177 3.0045e-07 au
i 5.60179337711522 5.1994e-06 deg
node 113.9636943687079 5.5444e-05 deg
peri 333.9105112039392 0.00013211 deg
M 258.4355673856244 0.00012298 deg
tp 2460228.084088468345
(2023-Oct-10.58408847)
0.0015034 TDB
period 4351.230647115856
11.91
0.00012408
3.397e-07
d
yr
n .08273521428670305 2.3593e-09 deg/d
Q 5.35773514945464 1.0186e-07 au
  Orbit Determination Parameters
   # obs. used (total)      993  
   data-arc span      10709 days (29.32 yr)  
   first obs. used      1991-04-06  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55383  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:48:45  

Additional Information
 Earth MOID = 4.09194 au 
 Jupiter MOID = .152491 au 
 T_jup = 2.990 
[ 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 11.8   n/a MPO492980  
diameter diameter 21.915 km 0.278 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.084   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

22009 (1999 XK77)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XK77 = 1994 NR9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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