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Asteroids with Satellites Database--Johnston's Archive

(164121) 2003 YT1

compiled by Wm. Robert Johnston
last updated20 September 2014

--Orbital and physical data--

(Seethis page for definitions of quantities; source codes in brackets, seethis 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 axisa:	1.109909552 AU
orbital periodP:	1.169336714 yr (= 427.1002347 d)
eccentricitye:	0.291915233
perihelion distanceq:	0.785910047 AU
aphelion distanceQ:	1.433909056 AU
inclinationi:	44.061464°
argument of perihelionω:	90.9713308°
ascending nodeΩ:	38.3445423°
mean anomalyM:	271.2306292°
perihelion passageT_P:	2014 Sep 05.315053
Epoch:	2014 May 23
data arc:	1982-2011(668 obs.)
Earth MOID:	0.00327393 AU
Jupiter Tisserand invariantT_J:	5.323

orbital data, secondary:

binary dynamical type:	A [P07f]
semimajor axisa_s:	3.93± 0.8 km[F12a]
separation/primary radiusa_s/r_p:	7.1 [*D]
separation/Hill radiusa_s/r_H:	0.056 [*D]
orbital periodP_s:	1.529± 0.075d [B06c]
eccentricitye_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 parameterG:	(0.15) [*A]
effective diameterd_E:	1.12 km [*D]
geometric albedo:	0.486± 0.04[M11b]
color indexU-B:	?
color indexB-V:	?
taxonomic type:	?
massm:	1.27x10¹² ± 3.9x10¹¹kg [B06c]
densityρ:	2.01± 0.7 g/cm³[B06c]
Hill radiusr_H:	70 km [*D]

other data, primary:

diameterd_p:	1.1± 0.2 km [N04a]
volume:	0.63± 0.1[B06c]
rotation periodRP_p:	2.343h [P06b]
amplitude in mag., rotationalΔM:	?
pole directionΒ, λ:	?,?

other data, secondary:

diameterd_s:	0.21± 0.06km [N04a]
diameter ratiod_s/d_p:	0.191± 0.065 [*D]
component mag. differenceΔM:	0.18 [P03c]
rotation periodRP_s:	?

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

Primary discovered2003 Dec 18from Catalina Station, Arizona, USAby Catalina Sky Survey.Linked to prediscovery observations from 1982 Nov 19.Permanent number assigned 2007 Sep 26.

Companion discovered2004 May 06usingradar and lightcurve observations.Announced2004 May 06.

--Links, more technical:

IAUC 8336.

--Links, less technical:

--Links to ADS abstracts:

Sanchez, Juan A., Michelsen, René, Reddy, Vishnu, & Nathues, Andreas 2013, IcarusSurface 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 ConferenceStudy of 2003 YT1 Asteroid
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical JournalThe Role of Kozai Cycles in Near-Earth Binary Asteroids
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical JournalBinary Asteroid Encounters with Terrestrial Planets: Timescales and Effects
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical JournalNear-Earth Binaries and Triples: Origin and Evolution of Spin-Orbital Properties
Vodniza, A. Q. & Rojas, M. 2011, EPSC-DPS Joint Meeting 2011Study of 2003 YT1 Asteroid
Delbo, Marco, Walsh, Kevin, Mueller, Michael, Harris, Alan W., & Howell, Ellen S. 2011, IcarusThe 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 SocietyOptical 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 TelegramBroad-band Photometry of the Binary Potentially Hazardous Asteroid 2003 YT1.
Brooks, Heidi E. 2006, Bulletin of the American Astronomical SocietyOrbits 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 SocietyCompositions 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 TelSome 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 Circulars2003 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 SocietyPhysical Characteristics of the Binary PHA 2003 YT1
Abell, P. A., Gaffey, M. J., & Hardersen, P. S. 2004, Bulletin of the American Astronomical SocietyCompositional 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 SocietyRadar 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 Circulars2003 YT1

©2004-2007, 2014by Wm. Robert Johnston.
Last modified20 September 2014.
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