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639 Latona (A907 OA)
Classification: Main-belt Asteroid          SPK-ID: 2000639
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .107021235036741 3.8925e-08  
a 3.017226545664992 1.2688e-08 au
q 2.694319234362285 1.1726e-07 au
i 8.555647299170266 4.449e-06 deg
node 279.8359978748582 2.7333e-05 deg
peri 70.6570335648197 3.3726e-05 deg
M 157.1790000760264 2.0768e-05 deg
tp 2458164.700075261919
(2018-Feb-15.20007526)
0.0001097 TDB
period 1914.301355525686
5.24
1.2075e-05
3.306e-08
d
yr
n .1880581649074476 1.1862e-09 deg/d
Q 3.3401338569677 1.4046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2932  
   data-arc span      41239 days (112.91 yr)  
   first obs. used      1907-07-20  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42914  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:17:50  

Additional Information
 Earth MOID = 1.70302 au 
 Jupiter MOID = 2.0782 au 
 T_jup = 3.222 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456434.5 (2013-May-22.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1025012855189582 3.8485e-08  
q 2.707875890288157 1.1516e-07 au
tp 2456238.199295701633
(2012-Nov-06.69929570)
0.00011536 TDB
node 280.0489328969284 2.7194e-05 deg
peri 68.70306455858828 3.437e-05 deg
i 8.577402447603102 4.4567e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2932  
   data-arc span      41239 days (112.91 yr)  
   first obs. used      1907-07-20  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42914  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:17:50  

Additional Information
 Jupiter MOID = 2.0782 au 
 T_jup = 3.222 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.481057465394374E-15 -4.410745887847092E-15 -5.274497845828336E-13 -3.122666523022204E-15 -1.188106198850783E-13 1.355658539312056E-15
q -4.410745887847092E-15 1.326250781941734E-14 1.651543651333865E-12 1.045413322591036E-14 3.673585920987827E-13 -3.870495260505E-15
tp -5.274497845828336E-13 1.651543651333865E-12 1.330699834321855E-8 -7.480097380366286E-13 2.446670577282438E-9 -2.760126281184278E-13
node -3.122666523022204E-15 1.045413322591036E-14 -7.480097380366286E-13 7.394999212605238E-10 -7.307753968358681E-10 1.713505348534218E-11
peri -1.188106198850783E-13 3.673585920987827E-13 2.446670577282438E-9 -7.307753968358681E-10 1.181307347056531E-9 -1.698018885205619E-11
i 1.355658539312056E-15 -3.870495260505E-15 -2.760126281184278E-13 1.713505348534218E-11 -1.698018885205619E-11 1.986179757987481E-11

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 8.3   n/a MPO502159 IRAS observations used: 15
diameter diameter 78.509 km 1.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.193 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Riccioli, D.; Blanco, C.; Cigna, M. (2001) Planet. Space Sci. 49, 657-671.]
[Warner, B.D. (2008) Minor Planet Bull. 35, 56-60.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.123   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.836   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=3.31, mean=9.42, max.=16.89) deg.
U-B UB 0.477   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=5.44, mean=10.44, max.=16.89) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

639 Latona (A907 OA)          Discovered 1907-Jul-19 by Lohnert, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A907 OA = A913 UB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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