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 ]  
630 Euphemia (A907 EM)
Classification: Main-belt Asteroid          SPK-ID: 2000630
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1124436148015201 3.3366e-08  
a 2.623000083198634 8.9468e-09 au
q 2.328060472219092 8.6395e-08 au
i 13.86709624745322 4.1421e-06 deg
node 105.3669925829581 1.5312e-05 deg
peri 40.0738852046229 2.4091e-05 deg
M 238.2748556409071 1.9377e-05 deg
tp 2459525.154836720557
(2021-Nov-06.65483672)
8.4301e-05 TDB
period 1551.657566017843
4.25
7.9388e-06
2.174e-08
d
yr
n .2320099536677413 1.187e-09 deg/d
Q 2.917939694178177 9.9528e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2377  
   data-arc span      41421 days (113.40 yr)  
   first obs. used      1907-03-07  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38702  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:19:12  

Additional Information
 Earth MOID = 1.35807 au 
 Jupiter MOID = 2.17811 au 
 T_jup = 3.354 
[ 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 11.1   n/a MPO448917  
diameter diameter 15.542 km 0.439 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 350. h n/a LCDB (Rev. 2019-August); 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:
[Warner, B.D. (2011) Minor Planet Bull. 38, 96-101.]
geometric albedo albedo 0.291   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

630 Euphemia (A907 EM)          Discovered 1907-Mar-07 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A907 EM = A924 DC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-20 02:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin