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677 Aaltje (1909 FR)
Classification: Main-belt Asteroid          SPK-ID: 2000677
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05135648196859523 4.2514e-08  
a 2.955358840702246 1.5382e-08 au
q 2.803582007688993 1.2869e-07 au
i 8.485103142950376 5.1359e-06 deg
node 272.8578787896694 3.3749e-05 deg
peri 277.3168214188581 5.935e-05 deg
M 309.6495424751932 4.948e-05 deg
tp 2457660.046202083846
(2016-Sep-28.54620208)
0.00025514 JED
period 1855.725595028606
5.08
1.4488e-05
3.967e-08
d
yr
n .1939941987998773 1.5145e-09 deg/d
Q 3.1071356737155 1.6172e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1653  
   data-arc span      39942 days (109.36 yr)  
   first obs. used      1906-08-13  
   last obs. used      2015-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49969  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:34:38  

Additional Information
 Earth MOID = 1.81871 au 
 Jupiter MOID = 1.96013 au 
 T_jup = 3.249 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.5 mag n/a MPO267709  
diameter diameter 28.87 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
rotation period rot_per 16.608 h n/a LCDB (Rev. 2015-December); 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 Bul. 36, 162-165.]
geometric albedo albedo 0.2794   0.037 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
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 (1909 FR)          Discovered 1909-Jan-18 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1909 FR = A906 PA 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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