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 ]  
136574 (1981 EW16)
Classification: Main-belt Asteroid          SPK-ID: 2136574
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289190000153525 4.988e-08  
a 2.754521785746444 1.8902e-08 au
q 2.123959413032865 1.3393e-07 au
i 2.639417541049308 5.2596e-06 deg
node 229.1542753442948 0.00012042 deg
peri 349.5164479948796 0.0001209 deg
M 218.3520584918529 1.3031e-05 deg
tp 2459857.515342184594
(2022-Oct-05.01534218)
6.4433e-05 TDB
period 1669.812640184749
4.57
1.7188e-05
4.706e-08
d
yr
n .2155930499844398 2.2192e-09 deg/d
Q 3.385084158460023 2.3229e-08 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      14583 days (39.93 yr)  
   first obs. used      1981-02-12  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .64714  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:17:59  

Additional Information
 Earth MOID = 1.11539 au 
 Jupiter MOID = 1.59278 au 
 T_jup = 3.304 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457286.5 (2015-Sep-21.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289996316794802 4.9892e-08  
q 2.123778723963796 1.3391e-07 au
tp 2456519.261794855442
(2013-Aug-14.76179486)
5.0925e-05 TDB
node 229.1544089339972 0.00012047 deg
peri 349.6672968189575 0.00012095 deg
i 2.638382054283471 5.2608e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      14583 days (39.93 yr)  
   first obs. used      1981-02-12  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .64714  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:17:59  

Additional Information
 Jupiter MOID = 1.59278 au 
 T_jup = 3.304 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.489165655044396E-15 -6.644553023016744E-15 -5.566383753472516E-13 1.260155271278004E-14 -1.35216196715796E-13 -5.912061691877697E-16
q -6.644553023016744E-15 1.793308740387381E-14 1.60650963468246E-12 -2.306546302244177E-14 3.920223130301961E-13 1.879934455531394E-15
tp -5.566383753472516E-13 1.60650963468246E-12 2.59337637053084E-9 3.087326570588193E-13 5.949392170492367E-10 1.935452693315394E-13
node 1.260155271278004E-14 -2.306546302244177E-14 3.087326570588193E-13 1.451263306802284E-8 -1.449486735237322E-8 -1.45448957754326E-10
peri -1.35216196715796E-13 3.920223130301961E-13 5.949392170492367E-10 -1.449486735237322E-8 1.462904785670141E-8 1.453865019037106E-10
i -5.912061691877697E-16 1.879934455531394E-15 1.935452693315394E-13 -1.45448957754326E-10 1.453865019037106E-10 2.767616170506356E-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 16.31   n/a MPCxxxxx  
diameter diameter 4.195 km 1.356 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.036   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136574 (1981 EW16)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ 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 2021-Jun-25 07:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin