Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08368839402028509 2.1091e-08  
a 3.164561967075643 1.3559e-08 au
q 2.899724858273408 6.8085e-08 au
i 9.59499092610465 4.3342e-07 deg
node 169.4332865604719 1.8272e-06 deg
peri 248.2318037474995 5.7157e-06 deg
M 73.03288480971773 6.9711e-06 deg
tp 2458783.357165204370
(2019-Oct-26.85716520)
3.8291e-05 TDB
period 2056.216469028828
5.63
1.3216e-05
3.618e-08
d
yr
n .175078842827298 1.1253e-09 deg/d
Q 3.429399075877877 1.4694e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2716  
   data-arc span      12919 days (35.37 yr)  
   first obs. used      1985-11-06  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46801  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 01:59:58  

Additional Information
 Earth MOID = 1.92738 au 
 Jupiter MOID = 1.90402 au 
 T_jup = 3.177 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457269.5 (2015-Sep-04.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08074754213800761 2.0965e-08  
q 2.913090329614609 6.7483e-08 au
tp 2456733.053081873327
(2014-Mar-16.55308187)
3.3754e-05 TDB
node 169.4604555080192 1.8259e-06 deg
peri 249.402811682631 5.9163e-06 deg
i 9.5913831823772 4.335e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2716  
   data-arc span      12919 days (35.37 yr)  
   first obs. used      1985-11-06  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46801  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 01:59:58  

Additional Information
 Jupiter MOID = 1.90402 au 
 T_jup = 3.177 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.395450305180809E-16 -1.390321652965487E-15 1.991760396740248E-13 -1.049978515830766E-15 -4.990276628491429E-15 -3.911758963827726E-16
q -1.390321652965487E-15 4.553931650897292E-15 -5.322911493005119E-13 2.661277876535784E-15 4.019703392213028E-14 1.447755828368424E-15
tp 1.991760396740248E-13 -5.322911493005119E-13 1.139320811644607E-9 1.123827798802508E-11 1.79720913670936E-10 -4.178967667547365E-12
node -1.049978515830766E-15 2.661277876535784E-15 1.123827798802508E-11 3.333769705879679E-12 -1.023376206191312E-12 -1.870292670989904E-13
peri -4.990276628491429E-15 4.019703392213028E-14 1.79720913670936E-10 -1.023376206191312E-12 3.500207369439037E-11 -4.950728550396035E-13
i -3.911758963827726E-16 1.447755828368424E-15 -4.178967667547365E-12 -1.870292670989904E-13 -4.950728550396035E-13 1.879222644768447E-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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-09 11:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin