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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 114 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1298457528435555 2.319e-08  
a 3.133696058318375 1.0204e-08 au
q 2.726798934443143 7.1901e-08 au
i 10.80962994449219 6.3406e-07 deg
node 86.82020286026062 7.4632e-06 deg
peri 167.3250872840996 1.0305e-05 deg
M 67.2241613686946 8.1598e-06 deg
tp 2458822.138772169701
(2019-Dec-04.63877217)
4.5173e-05 TDB
period 2026.206638292682
5.55
9.8969e-06
2.71e-08
d
yr
n .1776719082824358 8.6783e-10 deg/d
Q 3.540593182193607 1.1529e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2841  
   data-arc span      44675 days (122.31 yr)  
   first obs. used      1898-09-12  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46953  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:35:28  

Additional Information
 Earth MOID = 1.71141 au 
 Jupiter MOID = 1.52894 au 
 T_jup = 3.172 
[ 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 7.90   n/a E2021B10 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. 2020-October); Warner et al., 2009 Published Reference List:
[Koff, R.A. (2006) Minor Planet Bull. 33, 31-33.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
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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