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658 Asteria (A908 BL)
Classification: Main-belt Asteroid          SPK-ID: 2000658
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06535817596520681 3.689e-08  
a 2.852475033635994 9.3016e-09 au
q 2.666042468451253 1.0456e-07 au
i 1.505934181335539 3.9651e-06 deg
node 350.9824424983119 0.00013548 deg
peri 60.1763480670741 0.00013826 deg
M 166.8336574229298 2.8816e-05 deg
tp 2458185.021764093127
(2018-Mar-07.52176409)
0.00013946 TDB
period 1759.669897916685
4.82
8.6071e-06
2.356e-08
d
yr
n .2045838258790541 1.0007e-09 deg/d
Q 3.038907598820734 9.9095e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3171  
   data-arc span      41618 days (113.94 yr)  
   first obs. used      1906-08-24  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4306  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:19:59  

Additional Information
 Earth MOID = 1.67687 au 
 Jupiter MOID = 2.20076 au 
 T_jup = 3.301 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456470.5 (2013-Jun-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06427213121878045 3.6834e-08  
q 2.671067396604446 1.0416e-07 au
tp 2456435.748372158565
(2013-May-23.24837216)
0.00013961 TDB
node 351.1172249739269 0.00013568 deg
peri 62.57939380258346 0.00013857 deg
i 1.504988816711684 3.9611e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3171  
   data-arc span      41618 days (113.94 yr)  
   first obs. used      1906-08-24  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4306  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:19:59  

Additional Information
 Jupiter MOID = 2.20076 au 
 T_jup = 3.301 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.356766504965601E-15 -3.823939492296495E-15 -8.693789060232456E-13 -5.273218555679427E-15 -1.976957441287086E-13 1.566645125880974E-16
q -3.823939492296495E-15 1.084981781206039E-14 2.718352638024319E-12 1.513294614078087E-14 6.099146092189336E-13 -4.070460758542187E-16
tp -8.693789060232456E-13 2.718352638024319E-12 1.949208068651189E-8 -4.907687518580371E-12 3.946882798606999E-9 -9.351692934591928E-13
node -5.273218555679427E-15 1.513294614078087E-14 -4.907687518580371E-12 1.840797115478441E-8 -1.840233890812986E-8 1.493524995947587E-10
peri -1.976957441287086E-13 6.099146092189336E-13 3.946882798606999E-9 -1.840233890812986E-8 1.92012936193207E-8 -1.495000982589617E-10
i 1.566645125880974E-16 -4.070460758542187E-16 -9.351692934591928E-13 1.493524995947587E-10 -1.495000982589617E-10 1.569004411057948E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.5   n/a MPO473770 IRAS observations used: 5
diameter diameter 21.894 km 0.243 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 21.034 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Slivan, S.M.; Binzel, R.P.; Boroumand, S.C.; Pan M.W.; et al. (2008) Icarus 195, 226-276.]
geometric albedo albedo 0.192   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.870   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.39 deg.
U-B UB 0.360   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=5.39 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

658 Asteria (A908 BL)          Discovered 1908-Jan-23 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A908 BL = A906 UF = A918 EH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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