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(523775) 2014 YB₃₅
Discovery
Discovered by	Catalina Sky Survey
Discovery site	Catalina Station
Discovery date	27 December 2014
Designations
MPC designation	(523775) 2014 YB35
Alternative designations	2014 YB35
Minor planet category	Apollo · NEO · PHA
Orbital characteristics
	Epoch 27 April 2019 (JD 2458600.5)
	Uncertainty parameter 1
Observation arc	3.72 yr (1,360 d)
Aphelion	2.7834 AU
Perihelion	0.9697 AU
Semi-major axis	1.8766 AU
Eccentricity	0.4833
Orbital period (sidereal)	2.57 yr (939 d)
Mean anomaly	209.73°
Mean motion	0° 23m 0.24s / day
Inclination	12.641°
Longitude of ascending node	3.7634°
Argument of perihelion	188.63°
Known satellites	1 (D: <150 m; P: n.a.)
Earth MOID	0.0224 AU (8.73 LD)
Physical characteristics
Mean diameter	0.300 km; 0.52 km
Synodic rotation period	3.277±0.002 h
Geometric albedo	0.20 (assumed); 0.39
Spectral type	S (assumed)
Absolute magnitude (H)	19.0; 20.0

(523775) 2014 YB₃₅, provisional designation 2014 YB₃₅, is a stony near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 300 meters (980 feet) in diameter. It was discovered on 27 December 2014 by the Catalina Sky Survey at the Catalina Station in Arizona, United States.^[1] In March 2015, a minor-planet moon, less than half the size of its primary, was discovered by radar astronomers at Goldstone Observatory.^[3] The primary body of the binary system has a rotation period of 3.3 hours, while the secondary's orbital period remains unknown.^[8]

Orbit and classification

2014 YB₃₅ is a member of the Apollo asteroids, a group of near-Earth object with an Earth-crossing orbit. It orbits the Sun at a distance of 1.0–2.8 AU once every 2 years and 7 months (939 days; semi-major axis of 1.88 AU). Its orbit has an eccentricity of 0.48 and an inclination of 13° with respect to the ecliptic.^[2] The body's observation arc begins at with its official discovery observation at Catalina Station in December 2014.^[1]

Close encounters

It passed by Earth on 27 March 2015 at 06:21 UTC at a distance of 4,473,807 ± 155 km (2,779,895 ± 96 mi), or 11.7 lunar distances, and a relative speed of 10.16 km/s (6.31 mi/s).^[2] 2014 YB₃₅'s next encounter with Earth will be in 2033, at a distance of approximately 3,330,000 km (2,070,000 mi).^[2]

Satellite

The Goldstone Deep Space Communications Complex was scheduled to observe this object on 20 March 2015, at which time it was expected they could obtain coarse radar images and continuous wave spectra, which may help determine the asteroid's composition.^[6] These observations showed a small companion less than 150 meters across orbiting the asteroid, with an unknown orbit.^[3]^[4]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 25 September 2018 (M.P.C. 111778).^[9] As of 2018, it has not been named.^[1]

Notes

^ Lightcurve plot of (523775) 2014 YB35 by Robert Stephens. Rotation period 3.277±0.002 hours with a brightness amplitude of mag. Quality code is 2+. Summary figures for at the LCDB and CS3

References

^ ^a ^b ^c ^d ^e ^f "523775 (2014 YB35)". Minor Planet Center. Retrieved 9 October 2018.
^ ^a ^b ^c ^d ^e ^f "JPL Small-Body Database Browser: 523775 (2014 YB35)" (2018-09-17 last obs.). Jet Propulsion Laboratory. Retrieved 9 October 2018.
^ ^a ^b ^c ^d Johnston, Wm. Robert (30 September 2018). "Asteroids with Satellites Database – (450894) 2008 BT18". Johnston's Archive. Retrieved 9 October 2018.
^ ^a ^b ^c Naidu, S. P.; Benner, L. A. M.; Brozovic, M.; Giorgini, J. D.; Jao, J. S.; Lee, C. G.; et al. (July 2015). "2014 YB_35". Central Bureau Electronic Telegrams. 4121 (4121). 1. Bibcode:2015CBET.4121....1N.
^ ^a ^b ^c "Asteroid (523775) 2014 YB35". Small Bodies Data Ferret. Retrieved 9 October 2018.
^ ^a ^b ^c Benner, Lance A. M. (4 March 2015). "Goldstone Radar Observations Planning: 2002 FG7 and 2014 YB35". NASA/Jet Propulsion Laboratory. Archived from the original on 27 March 2015. Retrieved 13 March 2015. (L. Benner's list of radiometric NEA observations)
^ Stephens, Robert D.; French, Linda M.; Warner, Brian D.; Connour, Kyle (October 2015). "Lightcurve Analysis of Two Near-Earth Asteroids". The Minor Planet Bulletin. 42 (4): 276–277. Bibcode:2015MPBu...42..276S. ISSN 1052-8091.
^ ^a ^b ^c ^d "LCDB Data for (523775)". Asteroid Lightcurve Database (LCDB). Retrieved 9 October 2018.
^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 9 October 2018.