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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 60 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1603679010520548 3.8111e-08  
a 2.395065891054343 8.3222e-09 au
q 2.010974201224588 9.1215e-08 au
i 20.45374037622841 5.2526e-06 deg
node 158.9571688905935 1.2227e-05 deg
peri 121.1619209826964 1.9332e-05 deg
M 127.8015367672957 1.4724e-05 deg
tp 2457119.872959456431
(2015-Apr-07.37295946)
5.5244e-05 JED
period 1353.862707541103
3.71
7.0565e-06
1.932e-08
d
yr
n .2659058396355676 1.3859e-09 deg/d
Q 2.779157580884096 9.6569e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1572  
   data-arc span      38695 days (105.94 yr)  
   first obs. used      1910-02-02  
   last obs. used      2016-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4638  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 17:37:22  

Additional Information
 Earth MOID = 1.05986 au 
 Jupiter MOID = 2.64578 au 
 T_jup = 3.427 
[ 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 LCDB (Rev. 2016-February); Warner et al., 2009 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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