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 ]  
134550 (1999 RF157)
Classification: Main-belt Asteroid          SPK-ID: 2134550
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1708121751209028 4.3403e-08  
a 2.334051096107599 1.0792e-08 au
q 1.935366751538133 1.0203e-07 au
i 6.178413094730156 4.2334e-06 deg
node 142.7228028185569 4.243e-05 deg
peri 256.7211976325141 4.4072e-05 deg
M 252.0201612868022 1.1228e-05 deg
tp 2459391.164671845818
(2021-Jun-25.66467185)
4.1151e-05 TDB
period 1302.458713964583
3.57
9.033e-06
2.473e-08
d
yr
n .2764003159103507 1.9169e-09 deg/d
Q 2.732735440677066 1.2635e-08 au
  Orbit Determination Parameters
   # obs. used (total)      666  
   data-arc span      9153 days (25.06 yr)  
   first obs. used      1994-04-03  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52166  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:32:22  

Additional Information
 Earth MOID = .953914 au 
 Jupiter MOID = 2.69621 au 
 T_jup = 3.541 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO436657  
diameter diameter 1.480 km 0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.267   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

134550 (1999 RF157)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

Alternate Designations
 1999 RF157 = 2005 GW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-28 04:16 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin