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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
59914 (1999 RX157)
Classification: Main-belt Asteroid          SPK-ID: 2059914
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1715093354972478 4.744e-08  
a 3.045652281167321 2.5095e-08 au
q 2.523294482268637 1.5086e-07 au
i 15.48888795611324 8.0389e-06 deg
node 357.5261908580467 1.5973e-05 deg
peri 295.3732661569932 2.7432e-05 deg
M 358.4674362182919 2.2456e-05 deg
tp 2459008.764849741758
(2020-Jun-08.26484974)
0.00012113 TDB
period 1941.417344286104
5.32
2.3995e-05
6.569e-08
d
yr
n .1854315359134586 2.2918e-09 deg/d
Q 3.568010080066005 2.9399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      803  
   data-arc span      17932 days (49.10 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:51:06  

Additional Information
 Earth MOID = 1.55367 au 
 Jupiter MOID = 1.95511 au 
 T_jup = 3.161 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456992.5 (2014-Dec-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1700428401176531 4.7702e-08  
q 2.526948728027792 1.5142e-07 au
tp 2457071.638737540349
(2015-Feb-18.13873754)
0.00011858 TDB
node 357.5962675231025 1.5971e-05 deg
peri 295.814010250369 2.7519e-05 deg
i 15.49000460200177 8.0387e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      803  
   data-arc span      17932 days (49.10 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:51:06  

Additional Information
 Jupiter MOID = 1.95511 au 
 T_jup = 3.161 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.275474783439659E-15 -7.159160456767083E-15 2.774312790052549E-12 4.727804474561542E-15 5.324962994108776E-13 2.418440572831259E-15
q -7.159160456767083E-15 2.292734570685596E-14 -8.364720602542889E-12 -1.741196035061176E-14 -1.610390445171674E-12 -3.455992579654195E-15
tp 2.774312790052549E-12 -8.364720602542889E-12 1.406073494369171E-8 -7.176881876094768E-12 2.669685450214367E-9 9.109626887129899E-12
node 4.727804474561542E-15 -1.741196035061176E-14 -7.176881876094768E-12 2.550832880846174E-10 -2.464640418452136E-10 -6.789474394539687E-12
peri 5.324962994108776E-13 -1.610390445171674E-12 2.669685450214367E-9 -2.464640418452136E-10 7.573149202756874E-10 8.265938605636393E-12
i 2.418440572831259E-15 -3.455992579654195E-15 9.109626887129899E-12 -6.789474394539687E-12 8.265938605636393E-12 6.462060676077483E-11

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 14.3   n/a MPO436201  
diameter diameter 7.745 km 0.191 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59914 (1999 RX157)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-04 02:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin