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JPL Small-Body Database Browser
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27268 (1999 YS9)
Classification: Main-belt Asteroid          SPK-ID: 2027268
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07573669214965581 3.2336e-08  
a 2.246556589351858 7.6876e-09 au
q 2.076409824547335 7.1475e-08 au
i 5.938304701144393 4.1196e-06 deg
node 36.52069158082439 3.1552e-05 deg
peri 100.6445653144653 4.1123e-05 deg
M 248.0814729288829 2.702e-05 deg
tp 2458982.861323328027
(2020-May-13.36132333)
9.2762e-05 TDB
period 1229.913223488205
3.37
6.3131e-06
1.728e-08
d
yr
n .2927035770694374 1.5024e-09 deg/d
Q 2.41670335415638 8.2698e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1958  
   data-arc span      10316 days (28.24 yr)  
   first obs. used      1991-09-06  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4888  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:36:19  

Additional Information
 Earth MOID = 1.09962 au 
 Jupiter MOID = 2.59434 au 
 T_jup = 3.619 
[ 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 14.2   n/a MPO416980  
diameter diameter 3.286 km 0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.385   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27268 (1999 YS9)          Discovered 1999-Dec-31 by Kobayashi, T. at Oizumi
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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