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319 Leona (A891 TA)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000319
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 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2163737968062982 1.786e-08  
a 3.404600992087702 1.0764e-08 au
q 2.667934548819196 6.3342e-08 au
i 10.5619874902754 5.835e-07 deg
node 184.9277205285214 7.0025e-06 deg
peri 228.0370728609399 7.531e-06 deg
M 210.0914499166502 5.7877e-06 deg
tp 2460155.980134086183
(2023-Jul-30.48013409)
3.9607e-05 TDB
period 2294.551231932905
6.28
1.0882e-05
2.979e-08
d
yr
n .1568934242957565 7.4407e-10 deg/d
Q 4.141267435356207 1.3093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3240  
   data-arc span      47274 days (129.43 yr)  
   first obs. used      1891-10-09  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42668  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:41:58  

Additional Information
 Earth MOID = 1.69135 au 
 Jupiter MOID = 1.37426 au 
 T_jup = 3.081 
[ 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 10.25   n/a E2021B10  
diameter diameter 49.943 km 0.477 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 430. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pilcher, F.; Franco, L.; Pravec, P. (2017) Minor Planet Bull. 44, 87-90.]
geometric albedo albedo 0.085   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

319 Leona (A891 TA)          Discovered 1891-Oct-08 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A891 TA = A920 HE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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