(164121) 2003 YT1

Asteroids with Satellites Database--Johnston's Archive

(164121) 2003 YT1

compiled by Wm. Robert Johnston
last updated 20 September 2014

--Orbital and physical data--

(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)

dynamical type, primary: NEA, Apollo (PHA)
orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.109909552 AU
orbital period P: 1.169336714 yr
(= 427.1002347 d)
eccentricity e: 0.291915233
perihelion distance q: 0.785910047 AU
aphelion distance Q: 1.433909056 AU
inclination i: 44.061464°
argument of perihelion ω: 90.9713308°
ascending node Ω: 38.3445423°
mean anomaly M: 271.2306292°
perihelion passage T_P: 2014 Sep 05.315053
Epoch: 2014 May 23
data arc: 1982-2011 (668 obs.)
Earth MOID: 0.00327393 AU
Jupiter Tisserand invariant T_J: 5.323

orbital data, secondary:

binary dynamical type: A [P07f]
semimajor axis a_s: 3.93 ± 0.8 km [F12a]
separation/primary radius a_s/r_p: 7.1 [*D]
separation/Hill radius a_s/r_H: 0.056 [*D]
orbital period P_s: 1.529 ± 0.075 d [B06c]
eccentricity e_s: 0.18 ± 0.015 [F12a]
normalized ang. mom. α_L: 1.13 [P07f]

other data, system (combined):

absolute mag. H: 16.2 [MPC]
16.23 [JPL]
slope parameter G: (0.15) [*A]
effective diameter d_E: 1.12 km [*D]
geometric albedo: 0.486 ± 0.04 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: 1.27x10¹² ± 3.9x10¹¹ kg [B06c]
density ρ: 2.01 ± 0.7 g/cm³[B06c]
Hill radius r_H: 70 km [*D]
other data, primary:

diameter d_p: 1.1 ± 0.2 km [N04a]
volume : 0.63± 0.1[B06c]
rotation period RP_p: 2.343 h [P06b]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:

diameter d_s: 0.21 ± 0.06 km [N04a]
diameter ratio d_s/d_p: 0.191 ± 0.065 [*D]
component mag. difference ΔM: 0.18 [P03c]
rotation period RP_s: ?

-- (164121) 2003 YT1 --discovery and notes:

Primary discovered 2003 Dec 18 from Catalina Station, Arizona, USA by Catalina Sky Survey. Linked to prediscovery observations from 1982 Nov 19. Permanent number assigned 2007 Sep 26.

Companion discovered 2004 May 06 using radar and lightcurve observations. Announced 2004 May 06.

--Links, more technical:

IAUC 8336.

--Links, less technical:

--Links to ADS abstracts:

Sanchez, Juan A., Michelsen, René, Reddy, Vishnu, & Nathues, Andreas 2013, Icarus Surface composition and taxonomic classification of a group of near-Earth and Mars-crossing asteroids
Vodniza, A. Q. & Pereira, M. R. 2012, Lunar and Planetary Science Conference Study of 2003 YT1 Asteroid
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical Journal The Role of Kozai Cycles in Near-Earth Binary Asteroids
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical Journal Binary Asteroid Encounters with Terrestrial Planets: Timescales and Effects
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical Journal Near-Earth Binaries and Triples: Origin and Evolution of Spin-Orbital Properties
Vodniza, A. Q. & Rojas, M. 2011, EPSC-DPS Joint Meeting 2011 Study of 2003 YT1 Asteroid
Delbo, Marco, Walsh, Kevin, Mueller, Michael, Harris, Alan W., & Howell, Ellen S. 2011, Icarus The cool surfaces of binary near-Earth asteroids
Somers, James M., Hicks, M., Lawrence, K., Rhoades, H., Mayes, D., Barajas, T., McAuley, A., Foster, J., Shitanishi, J., Truong, T., & Garcia, K. 2010, Bulletin of the American Astronomical Society Optical Characterization Of Planetary Radar Targets, Low-ΔV, And Potentially Hazardous Asteroids: Results From 2009-2010.
Hicks, M., Somers, J., Barajas, T., Foster, J., McAuley, A., & Shitanishi, J. 2009, The Astronomer's Telegram Broad-band Photometry of the Binary Potentially Hazardous Asteroid 2003 YT1.
Brooks, Heidi E. 2006, Bulletin of the American Astronomical Society Orbits of Binary Near-Earth Asteroids from Radar Observations
Abell, P. A., Gaffey, M. J., Hardersen, P. S., Vilas, F., Jarvis, K. S., & Landis, R. R. 2005, Bulletin of the American Astronomical Society Compositions of Binary Near-Earth Objects: Implications for the Internal Structure of Their Parent Bodies
Geraschenko, O. M. & Lokot, V. O. 2005, Kinematika i Fizika Nebesnykh Tel Some results of photometric observations of the asteroids 1090 sumida, 1999 LF6, 2001 US16, 2003 YT1, and 2004 LJ1
Russell, K. S., Barrow, J., Phillips, N., & Williams, G. V. 2005, Minor Planet Electronic Circulars 2003 YT1
Larson, S. M., Grauer, A. D., Beshore, E., Christensen, E., Pravec, P., Kaasalainen, M., Nolan, M. C., Howell, E. S., Hine, A. A., Galad, A., Gajdos, B. S., Kornos, C. L., & Vilagi, D. J. 2004, Bulletin of the American Astronomical Society Physical Characteristics of the Binary PHA 2003 YT1
Abell, P. A., Gaffey, M. J., & Hardersen, P. S. 2004, Bulletin of the American Astronomical Society Compositional Results of Binary Near-Earth Asteroid 2003 YT1: A Basaltic Achondrite
Nolan, M. C., Howell, E. S., & Miranda, G. 2004, Bulletin of the American Astronomical Society Radar Images of Binary Asteroid 2003 YT1
Tichy, M., Kocer, M., Yeung, W. K. Y., Kusnirak, P., Larson, S., Beshore, E., Christensen, E., Hill, R., Kolar, S., McLean, D., McGaha, J. E., Holvorcem, P. R., Schwartz, M., & Spahr, T. B. 2003, Minor Planet Electronic Circulars 2003 YT1

© 2004-2007, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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