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JPL Small-Body Database Browser
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74618 (1999 RQ23)
Classification: Main-belt Asteroid          SPK-ID: 2074618
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 .2126382911718993 2.993e-08  
a 2.392855574728252 1.0298e-08 au
q 1.884042854296884 7.2639e-08 au
i 4.616761462329492 3.6277e-06 deg
node 142.1101512167969 6.1817e-05 deg
peri 159.9582858727956 6.2916e-05 deg
M 144.919081411059 1.3215e-05 deg
tp 2458056.252768208223
(2017-Oct-29.75276821)
4.8334e-05 TDB
period 1351.98899646136
3.70
8.7277e-06
2.39e-08
d
yr
n .266274356479416 1.7189e-09 deg/d
Q 2.901668295159621 1.2488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      946  
   data-arc span      10145 days (27.78 yr)  
   first obs. used      1991-04-14  
   last obs. used      2019-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55913  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:23:30  

Additional Information
 Earth MOID = .868736 au 
 Jupiter MOID = 2.33959 au 
 T_jup = 3.495 
[ 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 15.5   n/a MPO417341  
diameter diameter 1.238 km 0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.605   0.218 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74618 (1999 RQ23)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/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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