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1222 Tina (1932 LA)
Classification: Main-belt Asteroid          SPK-ID: 2001222
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2501545315578733 3.6169e-08  
a 2.793079043121656 1.0555e-08 au
q 2.094377663485445 1.0276e-07 au
i 19.59049624561884 4.765e-06 deg
node 245.7881603374059 1.1787e-05 deg
peri 59.95006868032711 1.4976e-05 deg
M 284.2485071550719 1.1013e-05 deg
tp 2459359.266564133824
(2021-May-24.76656413)
5.3251e-05 TDB
period 1704.995614443843
4.67
9.665e-06
2.646e-08
d
yr
n .2111442381143187 1.1969e-09 deg/d
Q 3.491780422757866 1.3196e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2334  
   data-arc span      32147 days (88.01 yr)  
   first obs. used      1932-06-11  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39452  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:28:05  

Additional Information
 Earth MOID = 1.14689 au 
 Jupiter MOID = 1.92507 au 
 T_jup = 3.200 
[ 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 11.2   n/a MPO256870  
diameter diameter 25.781 km 0.138 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.395 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2008) Minor Planet Bull. 35, 56-60.]
geometric albedo albedo 0.202   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1222 Tina (1932 LA)          Discovered 1932-Jun-11 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1932 LA = 1955 HP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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