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70141 (1999 NE18)
Classification: Main-belt Asteroid          SPK-ID: 2070141
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1670552694285069 3.9657e-08  
a 2.393536836487162 1.3078e-08 au
q 1.993683895380743 9.6813e-08 au
i 13.80438100224592 4.7238e-06 deg
node 91.40559635730666 1.7893e-05 deg
peri 156.5991460409319 2.2355e-05 deg
M 313.7491451488491 1.6231e-05 deg
tp 2459374.270425187436
(2021-Jun-08.77042519)
6.1765e-05 TDB
period 1352.566417827419
3.70
1.1086e-05
3.035e-08
d
yr
n .2661606818379061 2.1815e-09 deg/d
Q 2.793389777593581 1.5263e-08 au
  Orbit Determination Parameters
   # obs. used (total)      814  
   data-arc span      7944 days (21.75 yr)  
   first obs. used      1999-06-15  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58271  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:47:42  

Additional Information
 Earth MOID = .984107 au 
 Jupiter MOID = 2.27707 au 
 T_jup = 3.473 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.48   n/a E2021B10  
diameter diameter 4.454 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20.8783 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.097   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70141 (1999 NE18)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NE18 = 2000 WV164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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