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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1257879904551908 5.5586e-08  
a 2.588572824894984 1.5985e-08 au
q 2.262961451104528 1.5083e-07 au
i 14.50396458447908 5.3276e-06 deg
node 257.4591787543047 2.3682e-05 deg
peri 116.6155713107906 3.5827e-05 deg
M 6.387692560951967 2.7692e-05 deg
tp 2458573.508282932496
(2019-Mar-31.00828293)
0.00011689 TDB
period 1521.209427595435
4.16
1.4091e-05
3.858e-08
d
yr
n .2366538054980696 2.1921e-09 deg/d
Q 2.914184198685441 1.7996e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1091  
   data-arc span      13385 days (36.65 yr)  
   first obs. used      1983-04-14  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51261  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:19:39  

Additional Information
 Earth MOID = 1.30611 au 
 Jupiter MOID = 2.59525 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-January); 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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