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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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1717748026001506 3.7496e-08  
a 3.170208780332969 1.3566e-08 AU
q 2.625646792890009 1.2004e-07 AU
i 1.079291523148863 3.9481e-06 deg
node 174.5589490645444 0.00022727 deg
peri 233.2403562511075 0.00022761 deg
M 64.76623483524085 1.1511e-05 deg
tp 2456629.583312155109
(2013-Dec-03.08331216)
6.5238e-05 JED
period 2061.722562132081
5.64
1.3234e-05
3.623e-08
d
yr
n .1746112724438126 1.1208e-09 deg/d
Q 3.714770767775929 1.5896e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1740  
   data-arc span      25429 days (69.62 yr)  
   first obs. used      1945-10-15  
   last obs. used      2015-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54188  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 15:36:00  

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 LCDB (Rev. 2015-May); Warner et al., 2009 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
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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