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9326 Ruta (1989 SP2)
Classification: Main-belt Asteroid          SPK-ID: 2009326
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04478679609607853 3.0373e-08  
a 2.789563270005212 1.2472e-08 au
q 2.664627668634379 8.8278e-08 au
i 5.259350432037425 3.4298e-06 deg
node 128.8614210608164 5.0482e-05 deg
peri 173.8842744319935 7.7449e-05 deg
M 276.7932474874833 6.0092e-05 deg
tp 2459393.831585221220
(2021-Jun-28.33158522)
0.00028436 TDB
period 1701.777396712348
4.66
1.1413e-05
3.125e-08
d
yr
n .211543531307609 1.4187e-09 deg/d
Q 2.914498871376046 1.303e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1581  
   data-arc span      11224 days (30.73 yr)  
   first obs. used      1989-09-26  
   last obs. used      2020-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52723  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:57:27  

Additional Information
 Earth MOID = 1.64932 au 
 Jupiter MOID = 2.19534 au 
 T_jup = 3.322 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO435788  
diameter diameter 10.032 km 0.258 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.14533 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.048   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9326 Ruta           Discovered 1989 Sept. 26 by E. W. Elst at the European Southern Observatory.
Named for Rutaceae, the rue family, with over 150 genera and 1500 species, including citrus fruits. Ruta graviolens (common rue) is a perennial herb with a particularly strong scent. The family thrives in tropical and warm, temperate regions.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

Alternate Designations
 1989 SP2 = 1996 DV3 = 1997 LT12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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