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91418 (1999 NY56)
Classification: Main-belt Asteroid          SPK-ID: 2091418
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1564938857453009 4.8366e-08  
a 2.709906280546713 1.5723e-08 au
q 2.285822516698362 1.3343e-07 au
i 10.4853500153629 5.3818e-06 deg
node 228.9143672085694 2.3828e-05 deg
peri 120.0963146374609 2.7605e-05 deg
M 226.4375666840018 1.6024e-05 deg
tp 2459605.021367365444
(2022-Jan-25.52136737)
7.4816e-05 TDB
period 1629.407961868063
4.46
1.4181e-05
3.883e-08
d
yr
n .2209391438024346 1.9229e-09 deg/d
Q 3.133990044395063 1.8184e-08 au
  Orbit Determination Parameters
   # obs. used (total)      942  
   data-arc span      8042 days (22.02 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53112  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:40:51  

Additional Information
 Earth MOID = 1.30197 au 
 Jupiter MOID = 2.42049 au 
 T_jup = 3.322 
[ 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 14.7   n/a MPO280379  
diameter diameter 4.174 km 1.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.147   0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91418 (1999 NY56)          Discovered 1999-Jul-12 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 NY56 = 1998 KX12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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