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 ]  
35035 (1981 ER29)
Classification: Main-belt Asteroid          SPK-ID: 2035035
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1363585934901927 3.6352e-08  
a 2.613578299977624 1.2226e-08 au
q 2.257194439016187 9.5282e-08 au
i 13.28691230147116 5.3739e-06 deg
node 192.69469057 1.5714e-05 deg
peri 308.48998791 2.5108e-05 deg
M 37.9650291336082 1.8617e-05 deg
tp 2458437.745525557943
(2018-Nov-15.24552556)
7.9747e-05 TDB
period 1543.304776428393
4.23
1.0829e-05
2.965e-08
d
yr
n .2332656552992295 1.6368e-09 deg/d
Q 2.969962160939062 1.3894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1031  
   data-arc span      13970 days (38.25 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51404  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:53:14  

Additional Information
 Earth MOID = 1.29282 au 
 Jupiter MOID = 2.10165 au 
 T_jup = 3.358 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457113.5 (2015-Apr-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1372030189366387 3.6294e-08  
q 2.254788482861172 9.5201e-08 au
tp 2456893.466273191694
(2014-Aug-23.96627319)
7.9453e-05 TDB
node 192.70793358922 1.5715e-05 deg
peri 308.3123227912 2.5026e-05 deg
i 13.28733020516406 5.3742e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1031  
   data-arc span      13970 days (38.25 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51404  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:53:14  

Additional Information
 Jupiter MOID = 2.10165 au 
 T_jup = 3.358 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.317235732168972E-15 -3.433926833040256E-15 1.119658669773986E-12 -5.381569864117525E-15 2.644753499452891E-13 1.390985065894345E-15
q -3.433926833040256E-15 9.063258056101229E-15 -2.997486266712132E-12 1.397285584592518E-14 -7.042603306482801E-13 -3.059781395562926E-15
tp 1.119658669773986E-12 -2.997486266712132E-12 6.312702980024853E-9 -2.379668628223959E-11 1.557183798601256E-9 1.441380120929114E-12
node -5.381569864117525E-15 1.397285584592518E-14 -2.379668628223959E-11 2.469576111520849E-10 -2.454578393512177E-10 9.739269858311075E-12
peri 2.644753499452891E-13 -7.042603306482801E-13 1.557183798601256E-9 -2.454578393512177E-10 6.262768408016614E-10 -8.964118296118137E-12
i 1.390985065894345E-15 -3.059781395562926E-15 1.441380120929114E-12 9.739269858311075E-12 -8.964118296118137E-12 2.888242392576301E-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 14.4   n/a MPO436009  
diameter diameter 4.306 km 0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.005 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.166   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35035 (1981 ER29)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 ER29 = 1998 FX122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin