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677 Aaltje (A909 BP)
Classification: Main-belt Asteroid          SPK-ID: 2000677
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05001687647191314 3.4776e-08  
a 2.955796805201969 1.1581e-08 au
q 2.807957081520107 1.0484e-07 au
i 8.486265034724912 3.8512e-06 deg
node 272.7120326505263 2.5256e-05 deg
peri 275.467972542858 4.6662e-05 deg
M 300.8080563707796 4.008e-05 deg
tp 2459505.690063727450
(2021-Oct-18.19006373)
0.00020688 TDB
period 1856.138119574178
5.08
1.0908e-05
2.986e-08
d
yr
n .1939510838140583 1.1398e-09 deg/d
Q 3.103636528883831 1.216e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3402  
   data-arc span      41803 days (114.45 yr)  
   first obs. used      1906-08-13  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:48:45  

Additional Information
 Earth MOID = 1.82342 au 
 Jupiter MOID = 1.96299 au 
 T_jup = 3.249 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456635.5 (2013-Dec-09.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .050815588131741 3.4581e-08  
q 2.804106786176353 1.0426e-07 au
tp 2455809.471628583058
(2011-Sep-04.97162858)
0.00020379 TDB
node 272.8721663470038 2.5251e-05 deg
peri 278.0741092328051 4.6399e-05 deg
i 8.488348694124836 3.8525e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3402  
   data-arc span      41803 days (114.45 yr)  
   first obs. used      1906-08-13  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:48:45  

Additional Information
 Jupiter MOID = 1.96299 au 
 T_jup = 3.249 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.195829460295117E-15 -3.585819879645533E-15 -8.259488285358352E-13 -6.264444064664693E-16 -1.428200973396859E-13 8.555488262038869E-16
q -3.585819879645533E-15 1.087049682162202E-14 2.451516108562241E-12 1.297704287060908E-15 4.318184464472654E-13 -2.296788835266373E-15
tp -8.259488285358352E-13 2.451516108562241E-12 4.153011602289997E-8 1.003880605183274E-11 7.949198939413665E-9 -8.593628286953345E-13
node -6.264444064664693E-16 1.297704287060908E-15 1.003880605183274E-11 6.37604510933779E-10 -6.283740448787297E-10 5.063507187600066E-12
peri -1.428200973396859E-13 4.318184464472654E-13 7.949198939413665E-9 -6.283740448787297E-10 2.152838333913868E-9 -5.157210284092394E-12
i 8.555488262038869E-16 -2.296788835266373E-15 -8.593628286953345E-13 5.063507187600066E-12 -5.157210284092394E-12 1.484157781463778E-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 9.59   n/a E2021B10  
diameter diameter 32.403 km 0.442 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.608 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Oey, J. (2009) Minor Planet Bull. 36, 162-165.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.313   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Sl   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)

677 Aaltje (A909 BP)          Discovered 1909-Jan-18 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A909 BP = A906 PA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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