Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02716162589379754 4.3213e-08  
a 5.216058471150726 9.5759e-08 au
q 5.074381842317156 2.9128e-07 au
i 5.60178799895168 4.5504e-06 deg
node 113.9637240903903 5.3664e-05 deg
peri 333.9104754748566 0.00012956 deg
M 258.4355747363234 0.00012024 deg
tp 2460228.083996391010
(2023-Oct-10.58399639)
0.0014686 TDB
period 4351.230635662494
11.91
0.00011982
3.28e-07
d
yr
n .0827352145044797 2.2783e-09 deg/d
Q 5.357735099984295 9.836e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1205  
   data-arc span      10794 days (29.55 yr)  
   first obs. used      1991-04-06  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52811  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:53:40  

Additional Information
 Earth MOID = 4.09194 au 
 Jupiter MOID = .152492 au 
 T_jup = 2.990 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457402.5 (2016-Jan-15.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02591273885027618 4.287e-08  
q 5.086590179995058 2.8977e-07 au
tp 2455907.781463252777
(2011-Dec-12.28146325)
0.001499 TDB
node 113.9802363479655 5.3696e-05 deg
peri 336.5483026474641 0.00013547 deg
i 5.599115943336955 4.5462e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1205  
   data-arc span      10794 days (29.55 yr)  
   first obs. used      1991-04-06  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52811  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:53:40  

Additional Information
 Jupiter MOID = .152492 au 
 T_jup = 2.990 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.837840670070665E-15 -1.199565042174902E-14 -1.006032802837229E-11 -2.84758129749789E-15 -8.803017809380095E-13 -4.2328245847253E-16
q -1.199565042174902E-14 8.396563092048583E-14 1.070827765891827E-10 3.079995607231071E-14 9.353033702234561E-12 5.050202562973444E-15
tp -1.006032802837229E-11 1.070827765891827E-10 2.246973174042171E-6 -1.752010658725351E-10 1.864935164558785E-7 1.043308024407761E-11
node -2.84758129749789E-15 3.079995607231071E-14 -1.752010658725351E-10 2.883304854290651E-9 -2.883083317024277E-9 9.193631866921877E-11
peri -8.803017809380095E-13 9.353033702234561E-12 1.864935164558785E-7 -2.883083317024277E-9 1.835176372720942E-8 -9.051854328969242E-11
i -4.2328245847253E-16 5.050202562973444E-15 1.043308024407761E-11 9.193631866921877E-11 -9.051854328969242E-11 2.066766732081625E-11

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-24 15:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin