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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
35044 (1981 ET40)
Classification: Main-belt Asteroid          SPK-ID: 2035044
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02844705644850199 3.494e-08  
a 2.636612695976656 1.3748e-08 au
q 2.561608825781371 9.3578e-08 au
i 2.947163273705712 4.8744e-06 deg
node 313.4458801017666 7.425e-05 deg
peri 297.4761091201323 0.00012347 deg
M 347.4843160965244 0.0001004 deg
tp 2459054.865078647401
(2020-Jul-24.36507865)
0.00043618 TDB
period 1563.75220595251
4.28
1.223e-05
3.348e-08
d
yr
n .2302155025774799 1.8006e-09 deg/d
Q 2.711616566171941 1.4139e-08 au
  Orbit Determination Parameters
   # obs. used (total)      962  
   data-arc span      14320 days (39.21 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55309  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 07:59:06  

Additional Information
 Earth MOID = 1.54859 au 
 Jupiter MOID = 2.28669 au 
 T_jup = 3.395 
[ 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 15.2   n/a MPO436010  

35044 (1981 ET40)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 ET40 = 1998 FN128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-01 10:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin