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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2836002148175883 4.8404e-08  
a 3.031803946917528 2.1183e-08 au
q 2.171983696286905 1.5008e-07 au
i 6.534872541073064 5.2748e-06 deg
node 128.2029737470011 4.7911e-05 deg
peri 162.2148505611141 4.8692e-05 deg
M 244.3992258665248 9.4896e-06 deg
tp 2459219.667766996650
(2021-Jan-05.16776700)
5.4376e-05 TDB
period 1928.191206240783
5.28
2.0208e-05
5.533e-08
d
yr
n .1867034756899752 1.9568e-09 deg/d
Q 3.891624197548151 2.7191e-08 au
  Orbit Determination Parameters
   # obs. used (total)      675  
   data-arc span      9397 days (25.73 yr)  
   first obs. used      1993-06-17  
   last obs. used      2019-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6087  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:38:31  

Additional Information
 Earth MOID = 1.15618 au 
 Jupiter MOID = 1.33341 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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