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JPL Small-Body Database Browser
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74546 (1999 JR61)
Classification: Main-belt Asteroid          SPK-ID: 2074546
[ 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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1500025041992795 2.9571e-08  
a 2.185640987776774 7.5546e-09 au
q 1.857789366329671 6.4051e-08 au
i 3.11536058944078 6.6054e-06 deg
node 230.5552436449757 6.9545e-05 deg
peri 63.22783933605621 7.3597e-05 deg
M 22.26499385362415 2.4703e-05 deg
tp 2458527.506070221365
(2019-Feb-13.00607022)		 8.088e-05 TDB
period 1180.230046011506
3.23		 6.1191e-06
1.675e-08		 d
yr
n .3050252797889628 1.5815e-09 deg/d
Q 2.513492609223876 8.6878e-09 au
   Orbit Determination Parameters
   # obs. used (total)      887  
   data-arc span      10131 days (27.74 yr)  
   first obs. used      1992-02-29  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53112  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:26:34  

Additional Information
 Earth MOID = .843579 au 
 Jupiter MOID = 2.65349 au 
 T_jup = 3.660 
[ 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 16.0   n/a MPO436304  
diameter diameter 2.721 km 0.555 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.087   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

74546 (1999 JR61)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JR61 = 1992 DO9 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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