4904 Makio

4904 Makio
Discovery
Discovered by	Y. Mizuno; T. Furuta
Discovery site	Kani Obs. (403)
Discovery date	21 November 1989
Designations
MPC designation	(4904) Makio
Named after	Makio Akiyama; (Japanese astronomer)
Alternative designations	1989 WZ · 1974 TB; 1974 WC · 1980 KF2
Minor planet category	main-belt · (inner)
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	42.65 yr (15,578 days)
Aphelion	2.6986 AU
Perihelion	2.0785 AU
Semi-major axis	2.3886 AU
Eccentricity	0.1298
Orbital period (sidereal)	3.69 yr (1,348 days)
Mean anomaly	129.31°
Mean motion	0° 16m 1.2s / day
Inclination	10.122°
Longitude of ascending node	228.94°
Argument of perihelion	266.59°
Physical characteristics
Dimensions	6.992±0.044 km; 9.40 km (calculated)
Synodic rotation period	7.830±0.003 h
Geometric albedo	0.20 (assumed); 0.329±0.033; 0.3295±0.0326
Spectral type	S
Absolute magnitude (H)	12.5 · 12.6 · 12.70±0.57

4904 Makio, provisional designation 1989 WZ, is a stony asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered by Japanese astronomers Yoshikane Mizuno and Toshimasa Furuta at Kani Observatory (403) on 21 November 1989.^[3] It was named after Japanese astronomer Makio Akiyama.^[2]

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Discovery ^[1]
Discovered by	Y. Mizuno T. Furuta
Discovery site	Kani Obs. (403)
Discovery date	21 November 1989
Designations
MPC designation	(4904) Makio
Named after	Makio Akiyama (Japanese astronomer)^[2]
Alternative designations	1989 WZ · 1974 TB 1974 WC · 1980 KF₂
Minor planet category	main-belt · (inner) ^[3]^[4]
Orbital characteristics ^[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	42.65 yr (15,578 days)
Aphelion	2.6986 AU
Perihelion	2.0785 AU
Semi-major axis	2.3886 AU
Eccentricity	0.1298
Orbital period (sidereal)	3.69 yr (1,348 days)
Mean anomaly	129.31°
Mean motion	0° 16^m 1.2^s / day
Inclination	10.122°
Longitude of ascending node	228.94°
Argument of perihelion	266.59°
Physical characteristics
Dimensions	6.992±0.044 km^[5]^[6] 9.40 km (calculated)^[4]
Synodic rotation period	7.830±0.003 h^[7]
Geometric albedo	0.20 (assumed)^[4] 0.329±0.033^[6] 0.3295±0.0326^[5]
Spectral type	S ^[4]
Absolute magnitude (H)	12.5^[1]^[4] · 12.6^[5] · 12.70±0.57^[8]

4904 Makio

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