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 ]  
136628 (1994 PL21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2136628
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 .1520190345961212 4.7685e-08  
a 3.204672467688338 2.4609e-08 au
q 2.717501252953588 1.577e-07 au
i 1.088147760477388 4.9544e-06 deg
node 129.0464092205723 0.00023773 deg
peri 214.077295014603 0.00023823 deg
M 167.5429621847462 1.6176e-05 deg
tp 2458025.291249561551
(2017-Sep-28.79124956)
8.8998e-05 TDB
period 2095.433586584903
5.74
2.4136e-05
6.608e-08
d
yr
n .1718021522155331 1.9789e-09 deg/d
Q 3.691843682423089 2.835e-08 au
  Orbit Determination Parameters
   # obs. used (total)      613  
   data-arc span      15493 days (42.42 yr)  
   first obs. used      1977-10-16  
   last obs. used      2020-03-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54538  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:51:11  

Additional Information
 Earth MOID = 1.70972 au 
 Jupiter MOID = 1.71213 au 
 T_jup = 3.175 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456664.5 (2014-Jan-07.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472460808418845 4.7194e-08  
q 2.740785878610955 1.5533e-07 au
tp 2455926.235706344466
(2011-Dec-30.73570634)
8.6987e-05 TDB
node 128.9956634081618 0.00023801 deg
peri 214.3274479444653 0.00023855 deg
i 1.085572144235182 4.948e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      613  
   data-arc span      15493 days (42.42 yr)  
   first obs. used      1977-10-16  
   last obs. used      2020-03-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54538  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:51:11  

Additional Information
 Jupiter MOID = 1.71213 au 
 T_jup = 3.175 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.227247250779648E-15 -7.265347188474327E-15 -3.578471663190288E-13 8.071007784093408E-15 -1.579136843407886E-13 -3.275208957541577E-16
q -7.265347188474327E-15 2.412819180059739E-14 1.279144608302297E-12 -2.938672748698829E-14 5.625930153520106E-13 1.174215775830492E-15
tp -3.578471663190288E-13 1.279144608302297E-12 7.566796056906486E-9 -2.460449178734341E-11 1.410242166987498E-9 -7.938749224853308E-13
node 8.071007784093408E-15 -2.938672748698829E-14 -2.460449178734341E-11 5.664849054773406E-8 -5.664193911978552E-8 1.063337789765486E-10
peri -1.579136843407886E-13 5.625930153520106E-13 1.410242166987498E-9 -5.664193911978552E-8 5.69049164859448E-8 -1.064310207315104E-10
i -3.275208957541577E-16 1.174215775830492E-15 -7.938749224853308E-13 1.063337789765486E-10 -1.064310207315104E-10 2.448287651704726E-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 15.0   n/a MPO453849  
diameter diameter 5.964 km 0.335 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136628 (1994 PL21)          Discovered 1994-Aug-12 by Elst, E. W. at La Silla
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1994 PL21 = 3067 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-20 23:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin