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JPL Small-Body Database Browser
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35997 (1999 NQ20)
Classification: Main-belt Asteroid          SPK-ID: 2035997
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 .214054820322438 3.4892e-08  
a 3.139976260039239 2.3233e-08 au
q 2.467849205879819 1.1426e-07 au
i 11.66747332067747 3.7869e-06 deg
node 103.9148147292311 2.5464e-05 deg
peri 210.0363479966476 2.7853e-05 deg
M 179.9063777470811 1.179e-05 deg
tp 2457584.878157455585
(2016-Jul-15.37815746)
6.3419e-05 TDB
period 2032.300732717752
5.56
2.2555e-05
6.175e-08
d
yr
n .1771391380244103 1.966e-09 deg/d
Q 3.812103314198659 2.8206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      886  
   data-arc span      10310 days (28.23 yr)  
   first obs. used      1991-01-11  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5389  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:49:52  

Additional Information
 Earth MOID = 1.46039 au 
 Jupiter MOID = 1.49556 au 
 T_jup = 3.143 
[ 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 14.3   n/a MPO436017  
diameter diameter 8.374 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35997 (1999 NQ20)          Discovered 1999-Jul-14 by LINEAR at Socorro
Reference: 20020227/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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