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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2838538783496667 4.8305e-08  
a 3.031409796655583 2.0907e-08 au
q 2.170932369007721 1.4988e-07 au
i 6.535326080271821 5.257e-06 deg
node 128.2062407597456 4.7851e-05 deg
peri 162.2517211770949 4.863e-05 deg
M 319.0742106882714 9.9004e-06 deg
tp 2459219.659330441522
(2021-Jan-05.15933044)
5.4329e-05 TDB
period 1927.815206152602
5.28
1.9943e-05
5.46e-08
d
yr
n .1867398902400312 1.9318e-09 deg/d
Q 3.891887224303444 2.6841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      679  
   data-arc span      9722 days (26.62 yr)  
   first obs. used      1993-06-17  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60834  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:25:50  

Additional Information
 Earth MOID = 1.15581 au 
 Jupiter MOID = 1.33535 au 
 T_jup = 3.171 
[ 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 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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