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49439 (1998 YC5)
Classification: Main-belt Asteroid          SPK-ID: 2049439
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1047312833864837 3.9676e-08  
a 3.049813156690957 2.3303e-08 au
q 2.73040231070173 1.2182e-07 au
i 11.04583539408976 4.7582e-06 deg
node 120.3180035926382 2.3893e-05 deg
peri 296.5575196061355 3.5422e-05 deg
M 67.61519528423374 2.4199e-05 deg
tp 2458635.115531103197
(2019-May-31.61553110)
0.00013115 TDB
period 1945.397158876814
5.33
2.2296e-05
6.104e-08
d
yr
n .1850521875994967 2.1209e-09 deg/d
Q 3.369224002680185 2.5743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1061  
   data-arc span      9593 days (26.26 yr)  
   first obs. used      1994-02-10  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52339  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:32:38  

Additional Information
 Earth MOID = 1.76509 au 
 Jupiter MOID = 1.94812 au 
 T_jup = 3.201 
[ 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 14.2   n/a MPO337653  
diameter diameter 4.758 km 2.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 31.283 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 0.163   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49439 (1998 YC5)          Discovered 1998-Dec-17 by ODAS at Caussols
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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