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JPL Small-Body Database Browser
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18827 (1999 NA26)
Classification: Main-belt Asteroid          SPK-ID: 2018827
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1160482027919276 3.8685e-08  
a 3.054615326039951 1.9484e-08 au
q 2.700132707232337 1.2087e-07 au
i 15.21335713196476 4.6557e-06 deg
node 107.044608233466 1.5867e-05 deg
peri 235.9779041145386 2.4919e-05 deg
M 291.3560401126083 2.0624e-05 deg
tp 2459372.320255191146
(2021-Jun-06.82025519)
0.00011287 TDB
period 1949.993737080408
5.34
1.8657e-05
5.108e-08
d
yr
n .1846159775564219 1.7664e-09 deg/d
Q 3.409097944847565 2.1745e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1881  
   data-arc span      10842 days (29.68 yr)  
   first obs. used      1989-09-04  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .458  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:38:34  

Additional Information
 Earth MOID = 1.72221 au 
 Jupiter MOID = 1.98288 au 
 T_jup = 3.172 
[ 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 12.2   n/a MPO474015  
diameter diameter 20.607 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18827 (1999 NA26)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 NA26 = 1989 RV5 = 1998 HE120 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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