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49432 (1998 YD)
Classification: Main-belt Asteroid          SPK-ID: 2049432
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04404696237761871 5.3184e-08  
a 2.699788314690378 1.5452e-08 au
q 2.580870840365676 1.4634e-07 au
i 20.88968499020782 5.1997e-06 deg
node 287.8693508297121 1.2339e-05 deg
peri 222.1483130517334 4.8228e-05 deg
M 260.835544241951 4.7862e-05 deg
tp 2459446.820185312399
(2021-Aug-20.32018531)
0.00021618 TDB
period 1620.290914564132
4.44
1.3911e-05
3.809e-08
d
yr
n .2221823234112512 1.9075e-09 deg/d
Q 2.81870578901508 1.6133e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1576  
   data-arc span      11337 days (31.04 yr)  
   first obs. used      1989-10-28  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45923  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:50:42  

Additional Information
 Earth MOID = 1.61548 au 
 Jupiter MOID = 2.33668 au 
 T_jup = 3.272 
[ 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 13.3   n/a MPO395469  
diameter diameter 4.681 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 30.909 h n/a LCDB (Rev. 2020-October); 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 0.558   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49432 (1998 YD)          Discovered 1998-Dec-16 by Korlevic, K. at Visnjan
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 YD = 2001 LK7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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