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22216 (1242 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2022216
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1955357413279903 3.4362e-08  
a 2.604282205584003 9.8676e-09 au
q 2.095051953887841 8.9489e-08 au
i 13.82876359709899 3.6432e-06 deg
node 183.7988477298036 1.3132e-05 deg
peri 35.35943557026817 1.4883e-05 deg
M 214.7187378294508 8.2956e-06 deg
tp 2459819.994700643844
(2022-Aug-28.49470064)
3.7118e-05 TDB
period 1535.078157360565
4.20
8.7246e-06
2.389e-08
d
yr
n .2345157464939695 1.3329e-09 deg/d
Q 3.113512457280164 1.1797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1629  
   data-arc span      17313 days (47.40 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52097  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:02:35  

Additional Information
 Earth MOID = 1.10363 au 
 Jupiter MOID = 1.88436 au 
 T_jup = 3.345 
[ 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 14.3   n/a MPO526170  
diameter diameter 5.874 km 0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.115   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22216 (1242 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
 1242 T-2 = 1976 GJ7 = 1998 RJ27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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