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1691 Oort (1956 RB)
Classification: Main-belt Asteroid          SPK-ID: 2001691
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1717747452118249 4.4301e-08  
a 3.170208798400591 1.5469e-08 AU
q 2.625646989787044 1.4478e-07 AU
i 1.079292854960971 4.2218e-06 deg
node 174.5590949903114 0.00026545 deg
peri 233.2402015268436 0.00026573 deg
M 64.76623698150937 1.1545e-05 deg
tp 2456629.583296692527
(2013-Dec-03.08329669)
6.5544e-05 JED
period 2061.722579757304
5.64
1.5091e-05
4.132e-08
d
yr
n .1746112709510984 1.2781e-09 deg/d
Q 3.714770607014138 1.8127e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1439  
   data-arc span      25221 days (69.05 yr)  
   first obs. used      1945-10-15  
   last obs. used      2014-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57433  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 12:47:30  

Additional Information
 Earth MOID = 1.63543 AU 
 T_jup = 3.179 
[ 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 10.95 mag n/a PDS3 (MPC 17263)  
rotation period rot_per 10.2705 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
B-V BV .682 mag .025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=.75 deg.
U-B UB .316 mag .044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=.75 deg.
Tholen spectral type spec_T CU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1691 Oort (1956 RB)          Discovered 1956-Sep-09 by Reinmuth, K. and Groeneveld, I. at Heidelberg (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1956 RB = 1945 TD = 1947 DA = 1950 PZ = 1950 RU = 1951 XW = 1955 MW = 1956 SD = 1964 DA = A917 TD 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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