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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
19933 (1981 EW5)
Classification: Main-belt Asteroid          SPK-ID: 2019933
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1505539068324264 4.8435e-08  
a 2.552707595662977 1.0955e-08 au
q 2.168387494135106 1.2233e-07 au
i 12.61112232152546 4.8025e-06 deg
node 223.6907468888235 1.8031e-05 deg
peri 190.5753337262698 2.3093e-05 deg
M 64.70043046387705 1.2633e-05 deg
tp 2459128.765275212489
(2020-Oct-06.26527521)
5.2897e-05 TDB
period 1489.704167846559
4.08
9.5901e-06
2.626e-08
d
yr
n .2416587184020555 1.5557e-09 deg/d
Q 2.937027697190849 1.2605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1562  
   data-arc span      14677 days (40.18 yr)  
   first obs. used      1981-02-02  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43478  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:17:22  

Additional Information
 Earth MOID = 1.17991 au 
 Jupiter MOID = 2.44272 au 
 T_jup = 3.390 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457128.5 (2015-Apr-16.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1510489777305992 4.8479e-08  
q 2.166770531220334 1.2234e-07 au
tp 2457634.484182770484
(2016-Sep-02.98418277)
5.6702e-05 TDB
node 223.7566597857759 1.8004e-05 deg
peri 189.5701569950653 2.3037e-05 deg
i 12.62030011856836 4.8032e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1562  
   data-arc span      14677 days (40.18 yr)  
   first obs. used      1981-02-02  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43478  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:17:22  

Additional Information
 Jupiter MOID = 2.44272 au 
 T_jup = 3.390 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.350208943334284E-15 -5.915101284696474E-15 5.17416253610573E-13 1.779812238901153E-14 6.884761111186748E-14 -9.217080972205301E-15
q -5.915101284696474E-15 1.496688878766048E-14 -1.571391024411738E-12 -4.759513636013582E-14 -2.441191077407869E-13 2.344646861085866E-14
tp 5.17416253610573E-13 -1.571391024411738E-12 3.215123043469346E-9 2.218200316318777E-11 8.275550036027412E-10 -1.975448395621842E-12
node 1.779812238901153E-14 -4.759513636013582E-14 2.218200316318777E-11 3.241294767093463E-10 -3.103337124219648E-10 3.412867676393619E-11
peri 6.884761111186748E-14 -2.441191077407869E-13 8.275550036027412E-10 -3.103337124219648E-10 5.306848331122185E-10 -3.374739240045417E-11
i -9.217080972205301E-15 2.344646861085866E-14 -1.975448395621842E-12 3.412867676393619E-11 -3.374739240045417E-11 2.307080088398724E-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 14.02   n/a E2021B10  
diameter diameter 9.534 km 0.204 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19933 (1981 EW5)          Discovered 1981-Mar-07 by Bus, S. J. at Siding Spring
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-20 19:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin