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JPL Small-Body Database Browser
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1943 Anteros (1973 EC)
Classification: Amor [NEO]          SPK-ID: 2001943
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 488 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2560007022479815 2.4181e-08  
a 1.430457204396518 1.0852e-09 au
q 1.064259155535325 3.4652e-08 au
i 8.706410855558776 2.8399e-06 deg
node 246.3308387890281 1.679e-05 deg
peri 338.392152999114 1.7823e-05 deg
M 317.7819362798103 6.3378e-06 deg
tp 2458673.783557076187
(2019-Jul-09.28355708)
1.1016e-05 TDB
period 624.9002967611419
1.71
7.1112e-07
1.947e-09
d
yr
n .5760919011654817 6.5557e-10 deg/d
Q 1.796655253257711 1.363e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3449  
   data-arc span      16993 days (46.52 yr)  
   first obs. used      1973-03-10  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41096  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-19 06:07:04  

Additional Information
 Earth MOID = .0622122 au 
 Jupiter MOID = 3.19547 au 
 T_jup = 4.640 
[ 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 15.75   n/a PDS3 (MPC 17263)  
diameter diameter 2.3 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
rotation period rot_per 2.86923 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1990) Icarus 86, 402-447.]
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) Icarus 136, 124-153.]
[Koehn, B.W.; Bowell, E.L.G.; Skiff, B.A.; Sanborn, J.J.; et al. (2014) Minor Planet Bull. 41, 286-300.]
[Warner, B.D. (2014) Minor Planet Bull. 41, 157-168.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 41-53.]
[Warner, B.D.; Benishek, V.; Harris, A.W. (2017) Minor Planet Bull. 44, 186-188.]
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46-2, submitted. (NEA Gaggle) http://www.planetarysciences.org/PHP/CS3_Lightcurves.php]
geometric albedo albedo 0.17   n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
B-V BV 0.841   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=15.92, mean=16.51, max.=17.10) deg.
U-B UB 0.444   0.061 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=15.92, mean=16.51, max.=17.10) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B L   n/a Binzel et al. (2001) Icarus 151, 139-149  

1943 Anteros (1973 EC)          Discovered 1973-Mar-13 by Gibson, J. at El Leoncito
Reference: DISCOVERY.DBLast Updated: 2013-09-05

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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