(66063) 1998 RO1

Asteroids with Satellites Database--Johnston's Archive

(66063) 1998 RO1

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, Aten
orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 0.990918301 AU
orbital period P: 0.986427058 yr
(= 360.2924828 d)
eccentricity e: 0.720119477
perihelion distance q: 0.277338733 AU
aphelion distance Q: 1.704497870 AU
inclination i: 22.6775462°
argument of perihelion ω: 151.1200448°
ascending node Ω: 351.8797800°
mean anomaly M: 229.970747°
perihelion passage T_P: 2014 Sep 30.13489
Epoch: 2014 May 23
data arc: 1996-2010 (1302 obs.)
Earth MOID: 0.091696 AU
Jupiter Tisserand invariant T_J: 5.81

orbital data, secondary:

binary dynamical type: A [P07f]
semimajor axis a_s: 1.2 ± 0.3 km [S09a]
separation/primary radius a_s/r_p: 3.0 [*D]
separation/Hill radius a_s/r_H: 0.069 [*D]
orbital period P_s: 0.6058 ± 0.0008 d [P06b]
eccentricity e_s: 0.05 ± 0.06 [S09a]
normalized ang. mom. α_L: 1.32 [P07f]

other data, system (combined):

absolute mag. H: 18.1 [MPC]
slope parameter G: (0.15) [*A]
effective diameter d_E: 0.89 ± 0.17 km [*D]
geometric albedo: 0.14 ± 0.06 [P06b]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: 4.47x10¹¹ kg [*D]
density ρ: 1.5 ± 1.15 g/cm³[S09a]
Hill radius r_H: 17 km [*D]
other data, primary:

diameter d_p: 0.8 ± 0.15 km [P06b]
rotation period RP_p: 2.492 ± 0.000 h [P06b]
amplitude in mag., rotational ΔM: 0.16 [W14e]
pole direction Β, λ: ? , ?

other data, secondary:

diameter d_s: 0.38 ± 0.08 km [*D]
axial ratios a/b, b/c: 1.5 (a/c);? [S08b]
diameter ratio d_s/d_p: 0.48 ± 0.03 [P06b]
component mag. difference ΔM: 1.6 ± 0.1 [*D]
rotation period RP_s: ?

-- (66063) 1998 RO1 --discovery and notes:

Primary discovered 1998 Sep 14 from Socorro, New Mexico, USA by LINEAR. Alternate designation(s): 1999 SN5. Linked to prediscovery observations from 1996 Sep 12. Permanent number assigned 2003 Sep 10.

Companion discovered 2002 Sep 13 using lightcurve observations. Announced 2002 Oct 21.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

Pravec, Petr & Scheirich, P. 2010, Bulletin of the American Astronomical Society Binary System Candidates for Detection of BYORP
Scheirich, P. & Pravec, P. 2009, Icarus Modeling of lightcurves of binary asteroids
Wolters, Stephen D., Green, Simon F., McBride, Neil, & Davies, John K. 2008, Icarus Thermal infrared and optical observations of four near-Earth asteroids
Vokrouhlický, D., Čapek, D., Chesley, S. R., & Ostro, S. J. 2005, Icarus Yarkovsky detection opportunities. II. Binary systems
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
Abell, P. A., Gaffey, M. J., Landis, R. R., & Jarvis, K. S. 2005, 36th Annual Lunar and Planetary Science Conference Compositional Investigation of Binary Near-Earth Asteroid 66063 (1998 RO1): A Potentially Undifferentiated Assemblage
Galád, A., Kornoš, L., Gajdoš, Š., Világi, J., & Tóth, J. 2004, Contributions of the Astronomical Observatory Skalnate Pleso Relative photometry of numbered asteroids (3712), (4197), (5587), (28753) and (66063)
Pravec, P., Kusnirak, P., Sarounova, L., Brown, P., Esquerdo, G., Pray, D., Benner, L. A. M., Nolan, M. C., Giorgini, J. D., Ostro, S. J., & Margot, J.-L. 2003, International Astronomical Union Circular (66063) 1998 RO_1
Galad, A., Nakamura, A., Jacques Epoch, C., & Williams, G. V. 1999, Minor Planet Circulars 1998 RO1
Garradd, G. J., Zoltowski, F. B., Pravec, P., Sarounova, L., Sicoli, P., Testa, A., Blythe, M., Shelly, F., Bezpalko, M., Stuart, J., Viggh, H., Sayer, R., & Williams, G. V. 1998, Minor Planet Circulars 1998 RO1

© 2002-2009, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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