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78796 (2002 XH22)
Classification: Main-belt Asteroid          SPK-ID: 2078796
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05288756730672603 6.3993e-08  
a 3.15612129850723 3.2737e-08 au
q 2.989201720904238 2.0978e-07 au
i 9.671085069083606 5.5398e-06 deg
node 275.7409507083891 3.9512e-05 deg
peri 239.6900868644779 6.5419e-05 deg
M 326.4008753111641 5.1478e-05 deg
tp 2459191.641248569570
(2020-Dec-08.14124857)		 0.00029341 TDB
period 2047.995301136794
5.61		 3.1864e-05
8.724e-08		 d
yr
n .1757816533075894 2.7349e-09 deg/d
Q 3.323040876110223 3.4468e-08 au
   Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-03-05  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52268  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:29  

Additional Information
 Earth MOID = 2.01489 au 
 Jupiter MOID = 1.8072 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456553.5 (2013-Sep-18.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05495907098223529 6.3917e-08  
q 2.97960739412008 2.0977e-07 au
tp 2457163.322410502275
(2015-May-20.82241050)		 0.00027691 TDB
node 275.8776892496767 3.9403e-05 deg
peri 243.1511450475961 6.3559e-05 deg
i 9.688637481584578 5.5472e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      644  
   data-arc span      8266 days (22.63 yr)  
   first obs. used      1998-03-05  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52268  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:29  

Additional Information
 Jupiter MOID = 1.8072 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.085370093312959E-15 -1.326880020532915E-14 8.616923803117071E-13 1.923051301318562E-14 2.325906826822127E-13 -2.708089025202899E-15
q -1.326880020532915E-14 4.400289802367109E-14 -1.973252825617458E-12 -6.374519905955414E-14 -6.582294533573885E-13 1.034686236842684E-14
tp 8.616923803117071E-13 -1.973252825617458E-12 7.66789148546663E-8 -3.594697534069247E-11 1.387457459334141E-8 2.484214877384203E-12
node 1.923051301318562E-14 -6.374519905955414E-14 -3.594697534069247E-11 1.552561714083507E-9 -1.535701309556721E-9 4.986038329997636E-11
peri 2.325906826822127E-13 -6.582294533573885E-13 1.387457459334141E-8 -1.535701309556721E-9 4.039800792953531E-9 -4.884026687397303E-11
i -2.708089025202899E-15 1.034686236842684E-14 2.484214877384203E-12 4.986038329997636E-11 -4.884026687397303E-11 3.077191243356334E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO337849  
diameter diameter 3.847 km 0.507 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.227   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78796 (2002 XH22)          Discovered 2002-Dec-03 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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