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JPL Small-Body Database Browser
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19690 (1999 RD212)
Classification: Main-belt Asteroid          SPK-ID: 2019690
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1749426693666234 5.041e-08  
a 3.173226651691663 2.4185e-08 au
q 2.618093910739411 1.6262e-07 au
i 9.750754585703543 6.2433e-06 deg
node 325.0252106406348 2.9006e-05 deg
peri 316.9210736343675 3.3318e-05 deg
M 244.6161684812498 1.9043e-05 deg
tp 2459262.247824628359
(2021-Feb-16.74782463)
0.00011216 TDB
period 2064.667239165969
5.65
2.3604e-05
6.462e-08
d
yr
n .1743622377354249 1.9934e-09 deg/d
Q 3.728359392643915 2.8416e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1383  
   data-arc span      8517 days (23.32 yr)  
   first obs. used      1996-01-12  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51231  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:45:42  

Additional Information
 Earth MOID = 1.61147 au 
 Jupiter MOID = 1.54709 au 
 T_jup = 3.155 
[ 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 12.8   n/a MPO347677  
diameter diameter 16.723 km 0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 25.4988 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.051   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19690 (1999 RD212)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RD212 = 1998 MY31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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