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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04988410843089214 2.3427e-08  
a 2.955564296225164 1.0257e-08 au
q 2.808128606397795 7.2006e-08 au
i 8.485683456010609 3.6077e-07 deg
node 272.7069176092303 2.1215e-06 deg
peri 275.4282048461021 9.5629e-06 deg
M 338.8562114097738 8.3846e-06 deg
tp 2459505.503225986404
(2021-Oct-18.00322599)
4.3146e-05 TDB
period 1855.919112492686
5.08
9.6613e-06
2.645e-08
d
yr
n .1939739709434232 1.0098e-09 deg/d
Q 3.102999986052533 1.0769e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3734  
   data-arc span      41957 days (114.87 yr)  
   first obs. used      1906-08-13  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39344  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:25:11  

Additional Information
 Earth MOID = 1.82503 au 
 Jupiter MOID = 1.96257 au 
 T_jup = 3.250 
[ 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 9.59   n/a MPO614063  
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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