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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 ]

[ 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 .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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457413.5 (2016-Jan-26.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554326875019215 4.8368e-08  
q 2.28960293428323 1.3328e-07 au
tp 2457975.765768402826
(2017-Aug-10.26576840)
6.9818e-05 TDB
node 228.9287193422021 2.3827e-05 deg
peri 120.2079594653889 2.7646e-05 deg
i 10.4832781960937 5.381e-06 deg
  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
 Jupiter MOID = 2.42049 au 
 T_jup = 3.322 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.33950249115323E-15 -6.415018380225536E-15 1.090281972213154E-12 1.3888873186004E-15 2.139971930123095E-13 -3.483670956316529E-16
q -6.415018380225536E-15 1.776369881884026E-14 -2.681753939563984E-12 -3.773463870439786E-15 -5.402570194824822E-13 1.813696616551074E-15
tp 1.090281972213154E-12 -2.681753939563984E-12 4.874561246414449E-9 6.338844263623815E-12 9.958642452531155E-10 -1.886333657642134E-12
node 1.3888873186004E-15 -3.773463870439786E-15 6.338844263623815E-12 5.677264480237969E-10 -5.567190898324189E-10 -4.395697218817382E-11
peri 2.139971930123095E-13 -5.402570194824822E-13 9.958642452531155E-10 -5.567190898324189E-10 7.643041312578546E-10 4.284826184675041E-11
i -3.483670956316529E-16 1.813696616551074E-15 -1.886333657642134E-12 -4.395697218817382E-11 4.284826184675041E-11 2.895474412791101E-11

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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