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 ]  
628 Christine (A907 EK)
Classification: Main-belt Asteroid          SPK-ID: 2000628
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04434424511419788 2.4379e-08  
a 2.583087579168112 7.0484e-09 au
q 2.468542510406042 6.5895e-08 au
i 11.52749098365318 6.413e-07 deg
node 112.1094193443372 4.7031e-06 deg
peri 206.1260323219825 1.6061e-05 deg
M 346.6019836908539 1.7389e-05 deg
tp 2459256.934557598816
(2021-Feb-11.43455760)
7.3296e-05 TDB
period 1516.376773008175
4.15
6.2065e-06
1.699e-08
d
yr
n .2374080152163207 9.7171e-10 deg/d
Q 2.697632647930184 7.3609e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3170  
   data-arc span      41522 days (113.68 yr)  
   first obs. used      1907-03-07  
   last obs. used      2020-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41272  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:12:09  

Additional Information
 Earth MOID = 1.45596 au 
 Jupiter MOID = 2.47906 au 
 T_jup = 3.394 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.32   n/a E2021B10 IRAS observations used: 28
diameter diameter 48.239 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.1783 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2003) Minor Planet Bull. 30, 69-70.]
[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.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.120   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.813   0.018 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.88, mean=6.03, max.=9.18) deg.
U-B UB 0.321   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=2.88, mean=6.03, max.=9.18) deg.
Tholen spectral type spec_T SD   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

628 Christine (A907 EK)          Discovered 1907-Mar-07 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A907 EK = 1977 AT2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-15 23:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin