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79868 (1998 YA4)
Classification: Main-belt Asteroid          SPK-ID: 2079868
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2173807901544686 3.6075e-08  
a 2.634677986047715 7.8024e-09 au
q 2.061949603638079 9.4682e-08 au
i 5.41116277750528 2.8564e-06 deg
node 115.8470451538863 4.1115e-05 deg
peri 285.2360999734321 4.1878e-05 deg
M 137.5476331836354 6.7781e-06 deg
tp 2458799.684131409010
(2019-Nov-12.18413141)
2.9352e-05 TDB
period 1562.031332127047
4.28
6.9388e-06
1.9e-08
d
yr
n .2304691286248282 1.0238e-09 deg/d
Q 3.207406368457351 9.4985e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1455  
   data-arc span      9622 days (26.34 yr)  
   first obs. used      1995-02-02  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48603  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:09:47  

Additional Information
 Earth MOID = 1.07774 au 
 Jupiter MOID = 2.22655 au 
 T_jup = 3.358 
[ 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 14.78   n/a MPCxxxxx  
diameter diameter 3.207 km 0.753 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79868 (1998 YA4)          Discovered 1998-Dec-19 by Kobayashi, T. at Oizumi
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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