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74551 (1999 JY98)
Classification: Main-belt Asteroid          SPK-ID: 2074551
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117037386679224 4.4177e-08  
a 3.162839651560548 2.5345e-08 au
q 2.792669164256474 1.3855e-07 au
i 14.30931199533844 5.1208e-06 deg
node 156.2412146898817 1.9544e-05 deg
peri 79.48217572337013 3.0005e-05 deg
M 271.4063766183303 2.5473e-05 deg
tp 2459506.108250904063
(2021-Oct-18.60825090)
0.00014842 TDB
period 2054.53805113386
5.63
2.4696e-05
6.761e-08
d
yr
n .1752218703378713 2.1062e-09 deg/d
Q 3.533010138864622 2.8312e-08 au
  Orbit Determination Parameters
   # obs. used (total)      740  
   data-arc span      9816 days (26.87 yr)  
   first obs. used      1993-03-20  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56231  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:18:40  

Additional Information
 Earth MOID = 1.82821 au 
 Jupiter MOID = 1.62589 au 
 T_jup = 3.146 
[ 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 14.5   n/a MPO324955  
diameter diameter 7.595 km 0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.19 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.058   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74551 (1999 JY98)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JY98 = 2000 QC46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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