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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08415166685089613 4.5347e-08  
a 2.579033424677519 1.0009e-08 au
q 2.36200346312673 1.1583e-07 au
i 14.87878459538501 5.4536e-06 deg
node 333.7401330227717 1.6721e-05 deg
peri 75.94562090899286 3.7026e-05 deg
M 28.45508244170999 3.0952e-05 deg
tp 2458880.924768496458
(2020-Feb-01.42476850)
0.00013023 TDB
period 1512.808245397171
4.14
8.8062e-06
2.411e-08
d
yr
n .2379680313716734 1.3852e-09 deg/d
Q 2.796063386228307 1.0851e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2072  
   data-arc span      22480 days (61.55 yr)  
   first obs. used      1959-03-06  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42069  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 15:57:38  

Additional Information
 Earth MOID = 1.41705 au 
 Jupiter MOID = 2.48784 au 
 T_jup = 3.374 
[ 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 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-August); 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1967-Jun-12 12:14 < 00:01 Juno 0.0137985556698211 0.0137942334965027 0.0138028789882723 9.15405562785586 9.15405553153978 2439654.009799301 0.446378781903201 294.370681828496 32.7591978448757 -43.2686461390998 43479.0952929318 T 27 CATAB v2.0f-lin.ifort 2020-Oct-22 15:57:57 2020-Oct-22 15:58
2023-Sep-13 18:04 < 00:01 Thisb 0.0380160256946877 0.0380146020962993 0.038017449472855 5.62819160933177 5.62819157746492 2460201.252990664 0.356918722625457 164.847703834001 34.2381458655791 -67.3217022447298 153792.229653319 T 27 CATAB v2.0f-lin.ifort 2020-Oct-22 15:57:57 2020-Oct-22 15:58

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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