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17457 (1990 SC11)
Classification: Main-belt Asteroid          SPK-ID: 2017457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1592404650334394 3.3568e-08  
a 2.230798815145773 8.3416e-09 au
q 1.875565374425915 7.669e-08 au
i 7.25639805037759 4.7415e-06 deg
node 214.2278579112604 2.6151e-05 deg
peri 63.43004921810628 3.094e-05 deg
M 32.07287461888838 1.8538e-05 deg
tp 2458892.076250900961
(2020-Feb-12.57625090)
6.2452e-05 TDB
period 1216.995674365495
3.33
6.826e-06
1.869e-08
d
yr
n .2958104187080969 1.6592e-09 deg/d
Q 2.586032255865632 9.6699e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1449  
   data-arc span      10915 days (29.88 yr)  
   first obs. used      1990-09-16  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50595  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:13:19  

Additional Information
 Earth MOID = .872886 au 
 Jupiter MOID = 2.53602 au 
 T_jup = 3.615 
[ 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 15.0   n/a MPO473999  
diameter diameter 2.319 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.157 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 0.433   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17457 (1990 SC11)          Discovered 1990-Sep-16 by Holt, H. E. at Palomar
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 SC11 = 1999 CH80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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