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 ]  
636 Erika (A907 CE)
Classification: Main-belt Asteroid          SPK-ID: 2000636
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1690195722794853 3.5476e-08  
a 2.911942177486548 1.0746e-08 au
q 2.419766956145179 1.0253e-07 au
i 7.929658712840649 4.7121e-06 deg
node 34.60330339336441 2.7344e-05 deg
peri 298.4239650000242 3.0809e-05 deg
M 20.20709451644752 1.5548e-05 deg
tp 2458498.623522728600
(2019-Jan-15.12352273)
7.8241e-05 TDB
period 1814.982940167482
4.97
1.0047e-05
2.751e-08
d
yr
n .1983489717907652 1.098e-09 deg/d
Q 3.404117398827917 1.2563e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2871  
   data-arc span      41200 days (112.80 yr)  
   first obs. used      1907-02-15  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4395  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:46:22  

Additional Information
 Earth MOID = 1.42165 au 
 Jupiter MOID = 2.02717 au 
 T_jup = 3.247 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455722.5 (2011-Jun-10.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1738755039331503 3.5918e-08  
q 2.403396979809957 1.044e-07 au
tp 2454866.221511602733
(2009-Feb-03.72151160)
7.2196e-05 TDB
node 34.69914132882961 2.7417e-05 deg
peri 297.6666879919324 3.0606e-05 deg
i 7.928061894582892 4.7068e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2871  
   data-arc span      41200 days (112.80 yr)  
   first obs. used      1907-02-15  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4395  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:46:22  

Additional Information
 Jupiter MOID = 2.02717 au 
 T_jup = 3.247 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.290091206451911E-15 -3.736575171241264E-15 6.676960491783211E-13 4.047630151480229E-15 1.01498979428873E-13 9.512311739199862E-16
q -3.736575171241264E-15 1.089950560237638E-14 -1.93608776107626E-12 -1.096116385338834E-14 -2.889174321923207E-13 -2.450537400438057E-15
tp 6.676960491783211E-13 -1.93608776107626E-12 5.212327616422659E-9 -4.139881374752698E-12 9.954291823963877E-10 1.913200585454064E-12
node 4.047630151480229E-15 -1.096116385338834E-14 -4.139881374752698E-12 7.51697782279464E-10 -7.448659866890848E-10 -1.594919050766308E-12
peri 1.01498979428873E-13 -2.889174321923207E-13 9.954291823963877E-10 -7.448659866890848E-10 9.367416995943592E-10 1.942875459508961E-12
i 9.512311739199862E-16 -2.450537400438057E-15 1.913200585454064E-12 -1.594919050766308E-12 1.942875459508961E-12 2.215374116178607E-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 9.6   n/a MPO458832  
diameter diameter 73.147 km 0.565 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 14.603 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Piironen, J.; Bowell, E.; Erikson, A.; Magnusson, P. (1994) Astron. Astrophys. Suppl. Ser. 106, 587-595.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.048   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

636 Erika (A907 CE)          Discovered 1907-Feb-08 by Metcalf, J. H. at Taunton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A907 CE = 1954 UT1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-21 09:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin