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JPL Small-Body Database Browser
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18822 (1999 NL19)
Classification: Main-belt Asteroid          SPK-ID: 2018822
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05382303554948864 4.2991e-08  
a 2.971121504560504 1.9273e-08 au
q 2.811206726198694 1.27e-07 au
i 11.74007573724506 4.4489e-06 deg
node 121.2416214799987 2.2508e-05 deg
peri 96.86769987542741 4.8198e-05 deg
M 19.85925019978809 4.1327e-05 deg
tp 2458497.309577041120
(2019-Jan-13.80957704)
0.00021493 TDB
period 1870.591884964169
5.12
1.8202e-05
4.983e-08
d
yr
n .1924524546982603 1.8726e-09 deg/d
Q 3.131036282922314 2.0311e-08 au
  Orbit Determination Parameters
   # obs. used (total)      978  
   data-arc span      10088 days (27.62 yr)  
   first obs. used      1992-01-10  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5283  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:26:47  

Additional Information
 Earth MOID = 1.83336 au 
 Jupiter MOID = 1.96002 au 
 T_jup = 3.229 
[ 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 13.9   n/a MPO492954  
diameter diameter 5.433 km 0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.217   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18822 (1999 NL19)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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