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JPL Small-Body Database Browser
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5186 Donalu (1990 SB4)
Classification: Main-belt Asteroid          SPK-ID: 2005186
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08387851801989966 4.5428e-08  
a 2.578347168277885 1.009e-08 au
q 2.362079228861932 1.1598e-07 au
i 14.87948529173949 5.6217e-06 deg
node 333.7464815402314 1.6764e-05 deg
peri 75.98021848788476 3.7337e-05 deg
M 293.2034045128713 3.1501e-05 deg
tp 2458881.083639586089
(2020-Feb-01.58363959)
0.00013196 TDB
period 1512.204469619354
4.14
8.877e-06
2.43e-08
d
yr
n .2380630445369717 1.3975e-09 deg/d
Q 2.794615107693839 1.0937e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1906  
   data-arc span      22188 days (60.75 yr)  
   first obs. used      1959-03-06  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43664  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:55:37  

Additional Information
 Earth MOID = 1.41649 au 
 Jupiter MOID = 2.48968 au 
 T_jup = 3.374 
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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 11.9   n/a MPO347565  
diameter diameter 11.371 km 0.320 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.15 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Casalnuovo, G.B. (2016) Minor Planet Bull. 43, 112-115.]
geometric albedo albedo 0.260   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5186 Donalu (1990 SB4)          Discovered 1990-Sep-22 by Roman, B. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1990 SB4 = 1948 OB = 1959 ER = 1984 FF2 = 1986 PO4 = A901 DA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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