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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0756108782272738 3.0789e-08  
a 2.246728047724254 7.3541e-09 au
q 2.076850966897975 6.8601e-08 au
i 5.937635316115804 3.9676e-06 deg
node 36.51469666306038 3.1115e-05 deg
peri 100.5047774419692 4.0297e-05 deg
M 5.279098349626162 2.5873e-05 deg
tp 2458982.462288369233
(2020-May-12.96228837)
8.8391e-05 TDB
period 1230.05402760418
3.37
6.0394e-06
1.653e-08
d
yr
n .2926700713310819 1.437e-09 deg/d
Q 2.416605128550533 7.9101e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2090  
   data-arc span      10460 days (28.64 yr)  
   first obs. used      1991-09-06  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46653  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:09:55  

Additional Information
 Earth MOID = 1.09965 au 
 Jupiter MOID = 2.59313 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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