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JPL Small-Body Database Browser
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3928 Randa (1981 PG)
Classification: Main-belt Asteroid          SPK-ID: 2003928
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893309061417263 3.3266e-08  
a 2.246558970573226 6.1731e-09 au
q 1.821215924973773 7.4521e-08 au
i 2.452738798541881 3.4444e-06 deg
node 269.063761715914 8.7028e-05 deg
peri 54.57879928284211 8.752e-05 deg
M 182.589200929319 9.9253e-06 deg
tp 2459606.611763016153
(2022-Jan-27.11176302)
3.4748e-05 TDB
period 1229.915178945129
3.37
5.0694e-06
1.388e-08
d
yr
n .2927031116965025 1.2064e-09 deg/d
Q 2.671902016172678 7.3419e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2714  
   data-arc span      17693 days (48.44 yr)  
   first obs. used      1971-07-29  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43077  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:18:19  

Additional Information
 Earth MOID = .810247 au 
 Jupiter MOID = 2.64759 au 
 T_jup = 3.605 
[ 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 13.3   n/a MPO350832  
diameter diameter 5.733 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 29.9 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
[Galad, A.; Vilagi, J.; Kornos, L.; Gajdos, S. (2009) Minor Planet Bull. 36, 116-118.]
geometric albedo albedo 0.257   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3928 Randa (1981 PG)          Discovered 1981-Aug-04 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1981 PG = 1971 OP1 = 1978 TW5 = 1980 FL9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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