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90995 (1998 AK)
Classification: Main-belt Asteroid          SPK-ID: 2090995
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1461368823357304 2.985e-08  
a 2.392576892678947 7.699e-09 au
q 2.042933164834336 7.2819e-08 au
i 1.270653012701263 3.1193e-06 deg
node 274.7351608582372 0.00018917 deg
peri 210.0752230327883 0.00018972 deg
M 9.035173608010483 1.3954e-05 deg
tp 2458966.574107316277
(2020-Apr-27.07410732)
5.2372e-05 TDB
period 1351.752815829899
3.70
6.5247e-06
1.786e-08
d
yr
n .2663208804037006 1.2855e-09 deg/d
Q 2.742220620523558 8.8241e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1262  
   data-arc span      8066 days (22.08 yr)  
   first obs. used      1998-01-02  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53294  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:21:48  

Additional Information
 Earth MOID = 1.05853 au 
 Jupiter MOID = 2.31857 au 
 T_jup = 3.516 
[ 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 15.1   n/a MPO412705  

90995 (1998 AK)          Discovered 1998-Jan-02 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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