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19590 (1999 NG18)
Classification: Outer Main-belt Asteroid          SPK-ID: 2019590
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02943281264266603 1.4547e-08  
a 3.240976077777857 2.0433e-08 au
q 3.145585036101259 5.4057e-08 au
i 22.80937699541221 4.3595e-07 deg
node 98.05054946470271 1.7996e-06 deg
peri 260.5613771177834 3.9178e-05 deg
M 176.5082292285336 4.0922e-05 deg
tp 2458155.600257177302
(2018-Feb-06.10025718)
0.00024318 TDB
period 2131.140905216004
5.83
2.0154e-05
5.518e-08
d
yr
n .1689236029015697 1.5975e-09 deg/d
Q 3.336367119454455 2.1035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2242  
   data-arc span      17603 days (48.19 yr)  
   first obs. used      1973-01-02  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40332  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:59:01  

Additional Information
 Earth MOID = 2.18726 au 
 Jupiter MOID = 1.90948 au 
 T_jup = 3.060 
[ 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 12.22   n/a E2021B10  
diameter diameter 15.953 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.85947 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 0.083   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19590 (1999 NG18)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 NG18 = 1973 AC3 = 1998 KB59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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