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17432 (1989 SR)
Classification: Main-belt Asteroid          SPK-ID: 2017432
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09400867615002755 5.0453e-08  
a 2.989022077550347 1.5562e-08 au
q 2.708028069056634 1.5065e-07 au
i 8.883612623996154 4.7265e-06 deg
node 239.8008535325607 3.0563e-05 deg
peri 127.4507183006843 3.768e-05 deg
M 339.424383911909 2.159e-05 deg
tp 2459108.380377718026
(2020-Sep-15.88037772)
0.00011325 TDB
period 1887.522386314745
5.17
1.4741e-05
4.036e-08
d
yr
n .1907262147512194 1.4895e-09 deg/d
Q 3.27001608604406 1.7025e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1852  
   data-arc span      11315 days (30.98 yr)  
   first obs. used      1989-09-29  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47967  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:45:42  

Additional Information
 Earth MOID = 1.71923 au 
 Jupiter MOID = 2.21892 au 
 T_jup = 3.232 
[ 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 12.9   n/a MPO358799  
diameter diameter 8.341 km 1.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.089 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.211   0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

17432 (1989 SR)          Discovered 1989-Sep-29 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 SR = 1994 RH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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