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15256 (1990 RD1)
Classification: Main-belt Asteroid          SPK-ID: 2015256
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 .08355789199557269 3.3776e-08  
a 3.164469369725959 1.5533e-08 au
q 2.900052979907099 1.0831e-07 au
i 9.594165795111572 3.596e-06 deg
node 169.4392740932617 2.1277e-05 deg
peri 248.2680355852592 3.0383e-05 deg
M 37.99034936250073 2.0569e-05 deg
tp 2458783.519573787545
(2019-Oct-27.01957379)
0.00011769 TDB
period 2056.126220139138
5.63
1.5139e-05
4.145e-08
d
yr
n .1750865275068759 1.2892e-09 deg/d
Q 3.428885759544818 1.6831e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2264  
   data-arc span      12505 days (34.24 yr)  
   first obs. used      1985-11-06  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48316  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:14:36  

Additional Information
 Earth MOID = 1.92854 au 
 Jupiter MOID = 1.90445 au 
 T_jup = 3.177 
[ 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 12.8   n/a MPO502286  
diameter diameter 15.408 km 0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 22.824 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.062   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15256 (1990 RD1)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1990 RD1 = 1985 VU = 1996 TR27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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