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46561 (1991 RQ)
Classification: Main-belt Asteroid          SPK-ID: 2046561
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2731404205827017 4.3181e-08  
a 2.366838541938324 1.2398e-08 au
q 1.720359267141941 1.0522e-07 au
i 13.03664811376733 4.63e-06 deg
node 151.8851609188137 2.0864e-05 deg
peri 187.3967953645037 2.2905e-05 deg
M 217.1582303604565 1.4467e-05 deg
tp 2459128.220660353616
(2020-Oct-05.72066035)
5.6383e-05 TDB
period 1329.999188659652
3.64
1.045e-05
2.861e-08
d
yr
n .2706768568504174 2.1268e-09 deg/d
Q 3.013317816734706 1.5785e-08 au
  Orbit Determination Parameters
   # obs. used (total)      836  
   data-arc span      10122 days (27.71 yr)  
   first obs. used      1991-08-07  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61274  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:38:15  

Additional Information
 Earth MOID = .711026 au 
 Jupiter MOID = 2.38657 au 
 T_jup = 3.463 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO337630  
diameter diameter 4.710 km 1.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.069   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

46561 (1991 RQ)          Discovered 1991-Sep-07 by Helin, E. F. at Palomar
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 RQ = 1991 PN16 = 2000 AA182 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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