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

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2478153970960673 4.498e-08  
a 2.798264647044531 1.2608e-08 AU
q 2.104811582357304 1.2383e-07 AU
i 19.5926790003002 6.7176e-06 deg
node 245.9598325405263 1.5225e-05 deg
peri 59.46677443364783 1.9916e-05 deg
M 180.5020601431108 1.259e-05 deg
tp 2457652.988586272228
(2016-Sep-21.48858627)
6.2112e-05 JED
period 1709.746035540493
4.68
1.1555e-05
3.164e-08
d
yr
n .2105575872186158 1.423e-09 deg/d
Q 3.491717711731758 1.5732e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1070  
   data-arc span      29792 days (81.57 yr)  
   first obs. used      1932-06-11  
   last obs. used      2014-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53246  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:58:18  

Additional Information
 Earth MOID = 1.15557 AU 
 T_jup = 3.198 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.2 mag n/a MPO256870  
diameter diameter 20.84 km 1.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 27
rotation period rot_per 13.395 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Warner, B.D. (2008) Minor Planet Bul. 35, 56-60.]
geometric albedo albedo 0.3086   0.059 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 27
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 (012)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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