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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2291710197748041 5.2747e-08  
a 2.753924443763951 1.9526e-08 au
q 2.122804770603806 1.4077e-07 au
i 2.639926188798495 5.3951e-06 deg
node 229.1540073865919 0.00013321 deg
peri 349.5328919605278 0.00013373 deg
M 175.2090596168848 1.305e-05 deg
tp 2458188.080168706099
(2018-Mar-10.58016871)
5.714e-05 TDB
period 1669.269499564276
4.57
1.7753e-05
4.861e-08
d
yr
n .2156631988387554 2.2936e-09 deg/d
Q 3.385044116924095 2.4001e-08 au
  Orbit Determination Parameters
   # obs. used (total)      260  
   data-arc span      14498 days (39.69 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65638  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:51:36  

Additional Information
 Earth MOID = 1.1153 au 
 Jupiter MOID = 1.59398 au 
 T_jup = 3.304 
[ show covariance matrix ]

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 16.3   n/a MPO449765  
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 2020-Dec-01 16:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin