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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600976508134313 4.1753e-08  
a 2.395036238338718 9.3503e-09 AU
q 2.011596562967652 1.0136e-07 AU
i 20.45354367396543 5.3829e-06 deg
node 158.9603216589518 1.3756e-05 deg
peri 121.2339415131772 2.0708e-05 deg
M 328.2198750743303 1.6415e-05 deg
tp 2457120.014241501079
(2015-Apr-07.51424150)
6.1879e-05 JED
period 1353.837564862303
3.71
7.9281e-06
2.171e-08
d
yr
n .2659107778831761 1.5572e-09 deg/d
Q 2.778475913709785 1.0847e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1292  
   data-arc span      38123 days (104.38 yr)  
   first obs. used      1910-02-02  
   last obs. used      2014-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48227  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 13:51:55  

Additional Information
 Earth MOID = 1.06166 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. 2014-Mar-01) 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 ]
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