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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08381924021821126 2.108e-08  
a 3.16417733147459 1.3461e-08 au
q 2.898958391634702 6.797e-08 au
i 9.596091608307484 4.3344e-07 deg
node 169.4317095477286 1.8266e-06 deg
peri 248.1506588670051 5.705e-06 deg
M 107.4205283910225 7.0882e-06 deg
tp 2458783.056692603639
(2019-Oct-26.55669260)
3.8215e-05 TDB
period 2055.841597229999
5.63
1.3119e-05
3.592e-08
d
yr
n .1751107675246269 1.1174e-09 deg/d
Q 3.429396271314477 1.4589e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2865  
   data-arc span      13018 days (35.64 yr)  
   first obs. used      1985-11-06  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46703  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:46:16  

Additional Information
 Earth MOID = 1.92692 au 
 Jupiter MOID = 1.90456 au 
 T_jup = 3.177 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457322.5 (2015-Oct-27.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08100862961236784 2.0956e-08  
q 2.911783951697863 6.7365e-08 au
tp 2456732.811192309938
(2014-Mar-16.31119231)
3.3662e-05 TDB
node 169.4596805078313 1.825e-06 deg
peri 249.3111862682176 5.8927e-06 deg
i 9.593458683491384 4.3353e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2865  
   data-arc span      13018 days (35.64 yr)  
   first obs. used      1985-11-06  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46703  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:46:16  

Additional Information
 Jupiter MOID = 1.90456 au 
 T_jup = 3.177 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.391350189405862E-16 -1.387675294028903E-15 2.01018441834342E-13 -1.071056929982409E-15 -4.56794599893092E-15 -3.866832886595284E-16
q -1.387675294028903E-15 4.538007773238634E-15 -5.393927286728879E-13 2.756072722618796E-15 3.836870615107904E-14 1.428041792249494E-15
tp 2.01018441834342E-13 -5.393927286728879E-13 1.133108157937151E-9 1.118724871555264E-11 1.784508730295603E-10 -4.170833283280452E-12
node -1.071056929982409E-15 2.756072722618796E-15 1.118724871555264E-11 3.330707751481546E-12 -1.026218338977089E-12 -1.86658588720077E-13
peri -4.56794599893092E-15 3.836870615107904E-14 1.784508730295603E-10 -1.026218338977089E-12 3.472375178283978E-11 -4.946913399959874E-13
i -3.866832886595284E-16 1.428041792249494E-15 -4.170833283280452E-12 -1.86658588720077E-13 -4.946913399959874E-13 1.879519745518877E-13

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. 2020-October); 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

[ show close-approach data ]
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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