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22215 (1108 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2022215
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .131498467596531 3.7021e-08  
a 2.395598153464484 9.5045e-09 au
q 2.080580667306825 8.981e-08 au
i 6.343768682111023 4.5097e-06 deg
node 353.0275236804618 3.0768e-05 deg
peri 313.1949479937076 3.816e-05 deg
M 307.5410917461542 2.7381e-05 deg
tp 2459397.849544633228
(2021-Jul-02.34954463)
0.00010359 TDB
period 1354.31404184348
3.71
8.0598e-06
2.207e-08
d
yr
n .2658172247184052 1.5819e-09 deg/d
Q 2.710615639622143 1.0754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1411  
   data-arc span      17048 days (46.67 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-05-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51843  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:02:35  

Additional Information
 Earth MOID = 1.07011 au 
 Jupiter MOID = 2.53682 au 
 T_jup = 3.509 
[ show covariance matrix ]

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 14.74   n/a E2021B10  
diameter diameter 2.390 km 0.379 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.447   0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22215 (1108 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1108 T-2 = 1998 HE18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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