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244 Sita (A884 TA)
Classification: Main-belt Asteroid          SPK-ID: 2000244
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1371590699754487 2.8416e-08  
a 2.174534203570269 4.6991e-09 au
q 1.876277114578768 6.1483e-08 au
i 2.84507692045568 3.0807e-06 deg
node 208.9653135660483 7.6727e-05 deg
peri 166.4276970930311 7.8124e-05 deg
M 116.2394207392567 1.5959e-05 deg
tp 2458622.319851654677
(2019-May-18.81985165)
5.1512e-05 TDB
period 1171.245112359178
3.21
3.7965e-06
1.039e-08
d
yr
n .3073652100668073 9.963e-10 deg/d
Q 2.472791292561771 5.3436e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2863  
   data-arc span      49417 days (135.30 yr)  
   first obs. used      1885-01-09  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41912  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:01:43  

Additional Information
 Earth MOID = .87748 au 
 Jupiter MOID = 2.99039 au 
 T_jup = 3.672 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.9   n/a MPO431493  
diameter diameter 11.077 km 0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 129.51 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Brinsfield, J.W.; Higgins, D. (2009) Minor Planet Bull. 36, 25.]
[Vander Haagen, G. A. (2010) Minor Planet Bull. 37, 44-45.]
geometric albedo albedo 0.256   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Sa   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)

244 Sita (A884 TA)          Discovered 1884-Oct-14 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A884 TA = 1957 KT = 1976 HY = 1979 FL3 = A900 UA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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