Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
273 Atropos
Classification: Main-belt Asteroid          SPK-ID: 2000273
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600135410105627 5.6257e-08  
a 2.394977326286731 8.8948e-09 AU
q 2.011748523667582 1.354e-07 AU
i 20.4534858749624 6.4058e-06 deg
node 158.9608635228846 1.8421e-05 deg
peri 121.225709996329 2.7375e-05 deg
M 275.0352524759465 2.1726e-05 deg
tp 2457120.011729954061
(2015-Apr-07.51172995)
8.2116e-05 JED
period 1353.787613514638
3.71
7.5419e-06
2.065e-08
d
yr
n .2659205893200525 1.4814e-09 deg/d
Q 2.778206128905881 1.0318e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1213  
   data-arc span      38022 days (104.10 yr)  
   first obs. used      1910-02-02  
   last obs. used      2014-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46796  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 10:33:14  

Additional Information
 Earth MOID = 1.06003 AU 
 T_jup = 3.428 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.26 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
diameter diameter 29.27 km 1.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
rotation period rot_per 23.924 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Warner, B.D. (2007) Minor Planet Bul. 34, 104-107.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, Frederick; Alvarez, Eduardo A.; Ferrero, Andrea; Inasaridze, Raguli Ya.; et al. (2013) Minor Planet Bul. 40, 81-82.]
geometric albedo albedo 0.1624   0.015 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
B-V BV .760 mag .034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=8.14, mean=9.09, max.=10.01) deg.
U-B UB .374 mag .049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=8.14, mean=9.09, max.=10.01) deg.
Tholen spectral type spec_T SCTU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

273 Atropos          Discovered 1888-Mar-08 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A910 CC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-16 21:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin