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259 Aletheia (A886 MA)
Classification: Main-belt Asteroid          SPK-ID: 2000259
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 108 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1299528746568813 4.1991e-08  
a 3.136485513066717 1.2957e-08 au
q 2.728890204324034 1.3631e-07 au
i 10.81386046569509 4.766e-06 deg
node 86.84567200725466 2.1167e-05 deg
peri 167.7410334193133 2.6319e-05 deg
M 31.32227626784814 1.6695e-05 deg
tp 2458823.971768322548
(2019-Dec-06.47176832)
9.3647e-05 TDB
period 2028.912677368724
5.55
1.2573e-05
3.442e-08
d
yr
n .1774349404070363 1.0995e-09 deg/d
Q 3.5440808218094 1.4641e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2607  
   data-arc span      44523 days (121.90 yr)  
   first obs. used      1898-09-12  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48699  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:12:55  

Additional Information
 Earth MOID = 1.71502 au 
 Jupiter MOID = 1.52722 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 7.8   n/a MPO492751 IRAS observations used: 6
diameter diameter 174.318 km 1.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 8.143 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Koff, R.A. (2006) Minor Planet Bull. 33, 31-33.]
geometric albedo albedo 0.043   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.698   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=12.41 deg.
U-B UB 0.311   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=12.41 deg.
Tholen spectral type spec_T CP   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
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)

259 Aletheia (A886 MA)          Discovered 1886-Jun-28 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A886 MA = 1947 LD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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