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5056 Rahua (1986 RQ5)
Classification: Main-belt Asteroid          SPK-ID: 2005056
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2003911723149345 3.3504e-08  
a 2.638285506694306 1.1857e-08 au
q 2.109596381106333 8.6877e-08 au
i 7.245786458282723 4.2755e-06 deg
node 64.83251223698952 3.3809e-05 deg
peri 21.68779816491978 3.5751e-05 deg
M 239.2220485908101 1.3135e-05 deg
tp 2459525.629326445664
(2021-Nov-07.12932645)
5.8462e-05 TDB
period 1565.240636347261
4.29
1.0552e-05
2.889e-08
d
yr
n .2299965843208092 1.5505e-09 deg/d
Q 3.166974632282279 1.4233e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1636  
   data-arc span      13454 days (36.84 yr)  
   first obs. used      1982-10-21  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46836  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:28:30  

Additional Information
 Earth MOID = 1.12764 au 
 Jupiter MOID = 2.08063 au 
 T_jup = 3.356 
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Orbital Elements at Epoch 2456558.5 (2013-Sep-23.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2017315707183299 3.3844e-08  
q 2.104367051344449 8.8305e-08 au
tp 2456391.769977631639
(2013-Apr-09.26997763)
5.1759e-05 TDB
node 64.92656768908267 3.367e-05 deg
peri 20.68764082331275 3.5625e-05 deg
i 7.264707043280611 4.2903e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1636  
   data-arc span      13454 days (36.84 yr)  
   first obs. used      1982-10-21  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46836  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:28:30  

Additional Information
 Jupiter MOID = 2.08063 au 
 T_jup = 3.356 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.145436870574937E-15 -2.973265508663347E-15 -2.360440999190943E-13 -3.539077626581483E-15 -8.497916794995573E-14 -1.745424930771184E-16
q -2.973265508663347E-15 7.797856582779707E-15 6.955523371614393E-13 9.83309356188534E-15 2.390534286964371E-13 3.010160438251538E-16
tp -2.360440999190943E-13 6.955523371614393E-13 2.678990883222582E-9 1.286406349990329E-11 6.214911702552775E-10 -2.964978397442363E-12
node -3.539077626581483E-15 9.83309356188534E-15 1.286406349990329E-11 1.133697396287101E-9 -1.121369938985556E-9 -4.260114448497986E-11
peri -8.497916794995573E-14 2.390534286964371E-13 6.214911702552775E-10 -1.121369938985556E-9 1.269127220593492E-9 4.158697080825279E-11
i -1.745424930771184E-16 3.010160438251538E-16 -2.964978397442363E-12 -4.260114448497986E-11 4.158697080825279E-11 1.840681573061414E-11

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 13.3   n/a MPO435747  
diameter diameter 7.270 km 0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.309   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5056 Rahua           Discovered 1986 Sept. 9 by H. Debehogne at the European Southern Observatory.
According to Inca legend, Rahua, Ocllo, Cora and Huaco were the wives of the four sons of Pirua Wiracocha, creator god of civilization, sometimes associated with the Pleiades, and for whom the nation of Peru is named.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

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Alternate Designations
 1986 RQ5 = 1982 UE1 = 1982 VH9 = 1988 DC = 1990 OS2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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