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18440 (1994 NV1)
Classification: Main-belt Asteroid          SPK-ID: 2018440
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .283853883710656 4.5989e-08  
a 3.031409799964053 1.8795e-08 au
q 2.170932355125714 1.4492e-07 au
i 6.535327556318626 4.4821e-06 deg
node 128.2062369102605 4.7082e-05 deg
peri 162.2517244930899 4.7888e-05 deg
M 319.0742100832994 9.7245e-06 deg
tp 2459219.659334039958
(2021-Jan-05.15933404)
5.3216e-05 TDB
period 1927.815209308618
5.28
1.7929e-05
4.909e-08
d
yr
n .1867398899343204 1.7367e-09 deg/d
Q 3.891887244802392 2.413e-08 au
  Orbit Determination Parameters
   # obs. used (total)      764  
   data-arc span      9811 days (26.86 yr)  
   first obs. used      1993-06-17  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59204  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:49:19  

Additional Information
 Earth MOID = 1.15581 au 
 Jupiter MOID = 1.33535 au 
 T_jup = 3.171 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456857.5 (2014-Jul-19.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2822670398724905 4.6018e-08  
q 2.176955823590835 1.4486e-07 au
tp 2457290.474297588279
(2015-Sep-24.97429759)
4.5797e-05 TDB
node 128.2240057074882 4.7094e-05 deg
peri 162.2219972717025 4.7913e-05 deg
i 6.532170620307059 4.4797e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      764  
   data-arc span      9811 days (26.86 yr)  
   first obs. used      1993-06-17  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59204  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:49:19  

Additional Information
 Jupiter MOID = 1.33535 au 
 T_jup = 3.171 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.117681083168175E-15 -6.641037437250225E-15 -6.625671533697183E-13 -2.51263323522774E-14 -2.354958368344196E-14 -5.016162051470096E-15
q -6.641037437250225E-15 2.098583761163334E-14 2.173009278006423E-12 8.611695368951352E-14 7.926357020955171E-14 1.707951868798466E-14
tp -6.625671533697183E-13 2.173009278006423E-12 2.097327248669509E-9 1.518460331580007E-11 4.297547075678992E-10 5.226377057800799E-12
node -2.51263323522774E-14 8.611695368951352E-14 1.518460331580007E-11 2.217866473192696E-9 -2.200749329743108E-9 -2.610613335721088E-11
peri -2.354958368344196E-14 7.926357020955171E-14 4.297547075678992E-10 -2.200749329743108E-9 2.295640925038035E-9 2.692493016433675E-11
i -5.016162051470096E-15 1.707951868798466E-14 5.226377057800799E-12 -2.610613335721088E-11 2.692493016433675E-11 2.006776206343204E-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 MPO431711  
diameter diameter 4.181 km 0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.111   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18440 (1994 NV1)          Discovered 1994-Jul-08 by Elst, E. W. at Caussols
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 NV1 = 1998 BY17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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