(17246) 2000 GL74

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(17246) GL74
Orbit of (17246) 2000 GL74.png
Orbit of (17246) 2000 GL74
Discovery
Discovered by LINEAR
Discovery date April 5, 2000
Designations
1973 VM
Orbital characteristics[1][2]
Aphelion 2.8976 AU (433.4748 Gm)
Perihelion 2.7806 AU (415.9718 Gm)
2.8391 AU (424.7233 Gm)
Eccentricity 0.0206
4.78 years
8.7347°
Inclination 2.4532°
34.587°
299.71°
Known satellites 1
Proper orbital elements
75.19 deg / yr
4.78787 yr
(1748.77 d)
Physical characteristics
Dimensions 2.7962 mi (4.5 km)[2]
10 h[1]
Albedo 0.21 (geometric)[2]
Temperature 156 K (-117°C)
Spectral type
S[2]
13.7[1][2]

(17246) 2000 GL74 is a Main belt asteroid. It was discovered by the LINEAR program on April 5, 2000. It is known to possess a moon: S/2004 (17246) 1.

Characteristics[edit]

(17246) 2000 GL74 is more reflective than most asteroids, with an albedo of 0.21. Even so, it is not very bright, having a size of only 4.5 kilometres.[2] Its rotation period of 10 hours is not unusual, however.

Close Approaches[edit]

3 Juno, the asteroid that (17246) GL74 will approach on January 9, 2129

On January 9, 2129, (17426) 2000 GL74 will come within 3,639,998 kilometres of the asteroid 3 Juno. It will pass it with a relative velocity of 6.597 km/s.[1]

Moon[edit]

(17246) 2000 GL74 has one moon, S/2004 (17246) 1. It is 44% the size of (17246) 2000 GL74, at 2 km.[2] While its rotation period and orbital eccentricity is not yet known, it is known that the moon completes one orbit every 90 days at a distance of about 250 km. From the surface of (17246) 2000 GL74, S/2004 (17246) 1 would have an apparent diameter of about 0.668°, slightly larger than the Moon appears from Earth.[a]

Notes[edit]

  1. ^ Calculated by solving  \scriptstyle{\mathrm{tan}\left(\frac{\theta}{2}\right) = \frac{\mathrm{radius~of~moon}}{\mathrm{distance~from~surface~of~asteroid~to~center~of~moon}}}.

References[edit]

  1. ^ a b c d http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=17246;orb=1;cov=0;log=0;cad=1#orb
  2. ^ a b c d e f g Johnston, W. R. (1 September 2005). "(17246) 2000 GL74". Johnston's Archive. Retrieved 2013-09-24.