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 ]  
13938 (1989 RP1)
Classification: Main-belt Asteroid          SPK-ID: 2013938
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2315693825252543 3.5914e-08  
a 2.651219982894058 1.0207e-08 au
q 2.037278608516666 9.6958e-08 au
i 12.96166858889877 4.4584e-06 deg
node 162.5073572096335 1.4984e-05 deg
peri 155.2255923093469 1.7368e-05 deg
M 64.01485693511563 7.4112e-06 deg
tp 2458720.121084192100
(2019-Aug-24.62108419)
3.254e-05 TDB
period 1576.765371719121
4.32
9.1056e-06
2.493e-08
d
yr
n .2283155163456552 1.3185e-09 deg/d
Q 3.265161357271451 1.2571e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1749  
   data-arc span      15810 days (43.29 yr)  
   first obs. used      1976-09-25  
   last obs. used      2020-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:47:58  

Additional Information
 Earth MOID = 1.03221 au 
 Jupiter MOID = 2.12651 au 
 T_jup = 3.316 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457034.5 (2015-Jan-12.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2325041030619228 3.5906e-08  
q 2.034529070299668 9.7116e-08 au
tp 2457145.103051921382
(2015-May-02.60305192)
3.4413e-05 TDB
node 162.569976096481 1.4974e-05 deg
peri 155.4799077502394 1.7341e-05 deg
i 12.96787285608231 4.4608e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1749  
   data-arc span      15810 days (43.29 yr)  
   first obs. used      1976-09-25  
   last obs. used      2020-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:47:58  

Additional Information
 Jupiter MOID = 2.12651 au 
 T_jup = 3.316 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.289208080703222E-15 -3.475797497708946E-15 3.69916034021902E-13 -1.756873886548639E-16 9.303468500887608E-14 -3.409622511269207E-15
q -3.475797497708946E-15 9.431559937983778E-15 -1.07848058183579E-12 -1.388137370996861E-16 -2.71170606335164E-13 9.665362271451438E-15
tp 3.69916034021902E-13 -1.07848058183579E-12 1.184245759596355E-9 6.520441816986553E-13 3.106501349616331E-10 -2.641693236432612E-12
node -1.756873886548639E-16 -1.388137370996861E-16 6.520441816986553E-13 2.242174826806493E-10 -2.175978796595288E-10 8.940288609291497E-12
peri 9.303468500887608E-14 -2.71170606335164E-13 3.106501349616331E-10 -2.175978796595288E-10 3.00717041226874E-10 -9.304361455512917E-12
i -3.409622511269207E-15 9.665362271451438E-15 -2.641693236432612E-12 8.940288609291497E-12 -9.304361455512917E-12 1.989915536441329E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO439190  
diameter diameter 7.872 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.132   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13938 (1989 RP1)          Discovered 1989-Sep-05 by Helin, E. F. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 RP1 = 1976 SS6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-05 08:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin