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49446 (1998 YO9)
Classification: Main-belt Asteroid          SPK-ID: 2049446
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1260421908027503 4.7794e-08  
a 2.588941382861928 1.4182e-08 au
q 2.262625539106108 1.279e-07 au
i 14.50318754492061 5.3129e-06 deg
node 257.4583694578832 2.2394e-05 deg
peri 116.6110031726077 3.439e-05 deg
M 101.0194088007094 2.6519e-05 deg
tp 2458573.543062233310
(2019-Mar-31.04306223)
0.00011055 TDB
period 1521.534321184119
4.17
1.2503e-05
3.423e-08
d
yr
n .2366032727541983 1.9442e-09 deg/d
Q 2.915257226617747 1.597e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1174  
   data-arc span      13537 days (37.06 yr)  
   first obs. used      1983-04-14  
   last obs. used      2020-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50058  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:32:36  

Additional Information
 Earth MOID = 1.30645 au 
 Jupiter MOID = 2.59558 au 
 T_jup = 3.365 
[ 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 14.1   n/a MPO452842  
diameter diameter 4.108 km 0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 28.326 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.417   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49446 (1998 YO9)          Discovered 1998-Dec-25 by Korlevic, K., Juric, M. at Visnjan
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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