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JPL Small-Body Database Browser
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844 Leontina (A916 TC)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000844
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06933997670478209 3.9214e-08  
a 3.204016372125998 1.5278e-08 au
q 2.981849951521041 1.2517e-07 au
i 8.776041402142644 4.4781e-06 deg
node 348.6882203427368 2.809e-05 deg
peri 353.1982036180438 4.3302e-05 deg
M 92.23355054957797 3.2226e-05 deg
tp 2458463.805748967907
(2018-Dec-11.30574897)
0.00018822 TDB
period 2094.790119433796
5.74
1.4983e-05
4.102e-08
d
yr
n .1718549255413258 1.2292e-09 deg/d
Q 3.426182792730956 1.6337e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3848  
   data-arc span      43140 days (118.11 yr)  
   first obs. used      1902-03-06  
   last obs. used      2020-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .35323  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:13:40  

Additional Information
 Earth MOID = 1.97401 au 
 Jupiter MOID = 1.9585 au 
 T_jup = 3.171 
[ 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 9.6   n/a MPO267709  
diameter diameter 42.154 km 0.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.7859 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.173   0.022 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)

844 Leontina (A916 TC)          Discovered 1916-Oct-01 by Rheden, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A916 TC = 1935 BN = 1953 FL1 = A902 EC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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