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JPL Small-Body Database Browser
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20579 (1999 RX149)
Classification: Main-belt Asteroid          SPK-ID: 2020579
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296529295295795 4.1636e-08  
a 2.601683954685447 1.4349e-08 au
q 2.264368008250377 1.0756e-07 au
i 13.66166361738507 5.3959e-06 deg
node 165.6966839826904 1.6655e-05 deg
peri 298.6610708584375 2.6454e-05 deg
M 133.8491744412781 1.9611e-05 deg
tp 2458030.606857970049
(2017-Oct-04.10685797)
8.3681e-05 TDB
period 1532.781445886244
4.20
1.2681e-05
3.472e-08
d
yr
n .2348671436271532 1.943e-09 deg/d
Q 2.938999901120517 1.6209e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1456  
   data-arc span      10103 days (27.66 yr)  
   first obs. used      1991-09-12  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49365  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:53:51  

Additional Information
 Earth MOID = 1.31437 au 
 Jupiter MOID = 2.22327 au 
 T_jup = 3.363 
[ 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 13.5   n/a MPO347683  
diameter diameter 5.103 km 0.295 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.242 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.325   0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20579 (1999 RX149)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RX149 = 1991 RT25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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