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129818 (1999 NE28)
Classification: Main-belt Asteroid          SPK-ID: 2129818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2526878314118883 5.1117e-08  
a 2.346941004426034 1.0932e-08 au
q 1.753897571565981 1.2439e-07 au
i 5.670165058807665 4.1046e-06 deg
node 80.35180756439574 5.0735e-05 deg
peri 255.7620927228864 5.1259e-05 deg
M 266.0468391829871 8.5994e-06 deg
tp 2459343.236676194184
(2021-May-08.73667619)
3.2672e-05 TDB
period 1313.26293183703
3.60
9.1758e-06
2.512e-08
d
yr
n .2741263697258412 1.9153e-09 deg/d
Q 2.939984437286088 1.3694e-08 au
  Orbit Determination Parameters
   # obs. used (total)      638  
   data-arc span      7626 days (20.88 yr)  
   first obs. used      1999-06-11  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57028  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:47:37  

Additional Information
 Earth MOID = .754913 au 
 Jupiter MOID = 2.46429 au 
 T_jup = 3.510 
[ 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 16.0   n/a MPO264197  
diameter diameter 2.923 km 0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.101   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129818 (1999 NE28)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

Alternate Designations
 1999 NE28 = 2002 GK22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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