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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05013509537772785 3.5555e-08  
a 2.955518543627235 1.2171e-08 au
q 2.80734333955184 1.064e-07 au
i 8.486983700789521 3.9313e-06 deg
node 272.7129818456211 2.6367e-05 deg
peri 275.5960809316275 4.8434e-05 deg
M 261.90119404785 4.1942e-05 deg
tp 2459506.220059276772
(2021-Oct-18.72005928)
0.00021688 TDB
period 1855.876017781923
5.08
1.1464e-05
3.139e-08
d
yr
n .1939784751517288 1.1982e-09 deg/d
Q 3.103693747702629 1.2781e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3219  
   data-arc span      41734 days (114.26 yr)  
   first obs. used      1906-08-13  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4065  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:55:19  

Additional Information
 Earth MOID = 1.82346 au 
 Jupiter MOID = 1.96397 au 
 T_jup = 3.249 
[ 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 9.6   n/a MPO502159  
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1927-Jul-26 02:16 00:02 Jupiter 1.98955892570591 1.98955851658078 1.9895593348315 2.96211371091743 2.81472023515339 2425087.594326932 1.68359990217054 123.953477173902 15.2349409433283 -88.9208244547725 3859920.24922902 T 40 CATAB v2.0f-lin.ifort 2020-Dec-18 01:55:27 2020-Dec-18 01:55
1963-Feb-20 15:47 < 00:01 Jupiter 1.98840513828239 1.9884047406887 1.9884055358762 2.95634730028799 2.80856327239259 2438081.157691461 0.994679743682921 81.1021616190214 14.9165501379685 -87.2703468247532 3846207.1350758 T 40 CATAB v2.0f-lin.ifort 2020-Dec-18 01:55:27 2020-Dec-18 01:55
1998-Sep-14 16:19 < 00:01 Jupiter 1.99250275475789 1.9925023615664 1.99250314794938 2.97285815271953 2.82624768294058 2451071.179702805 0.329130296657065 49.5241521501507 13.7252256716338 -81.5100460984594 3860116.07872035 T 40 CATAB v2.0f-lin.ifort 2020-Dec-18 01:55:27 2020-Dec-18 01:55
2034-Apr-10 19:31 < 00:01 Jupiter 1.99413201225832 1.99413161551702 1.99413240899963 2.97738985842571 2.83113676488445 2464063.312852011 0.443910862663972 52.3054681240617 13.5649614502445 -81.5984041893863 3842967.70481495 T 40 CATAB v2.0f-lin.ifort 2020-Dec-18 01:55:27 2020-Dec-18 01:55
2069-Nov-02 04:02 00:01 Jupiter 1.9931333489243 1.99313293548475 1.99313376236407 2.98140416713218 2.83528308447031 2477052.667902887 1.1182743310297 86.6590948362789 14.4798305994701 -86.2555037632044 3794339.70804384 T 40 CATAB v2.0f-lin.ifort 2020-Dec-18 01:55:27 2020-Dec-18 01:55
2140-Dec-19 09:34 00:02 Jupiter 1.9983619066768 1.99836141562573 1.99836239773025 3.00414740240628 2.85957772755546 2503031.898638249 2.48129443040823 172.237923605906 14.8001425115857 -87.9447620208112 3756857.24693017 T 40 CATAB v2.0f-lin.ifort 2020-Dec-18 01:55:27 2020-Dec-18 01:55

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