Search results
Results From The WOW.Com Content Network
[9] [19] It was initially estimated to be 300 km (190 mi) in diameter under the assumption of an albedo of 0.15, [5] though observations of a single-chord stellar occultation at Penticton, Canada on 20 October 2018 suggested a smaller diameter of 220 km (140 mi), corresponding to a higher albedo of 0.21.
Sedna has a V band absolute magnitude of about 1.8, and is estimated to have an albedo (reflectivity) of around 0.41, giving it a diameter of approximately 900 km. [14] At the time of discovery it was the brightest object found in the Solar System since Pluto in 1930.
This list contains a selection of objects 50 and 99 km in radius (100 km to 199 km in average diameter). The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following ...
Assuming that the albedo of 2018 VG 18 is within the range of 0.10–0.25, its diameter should be around 500–850 km (310–530 mi). [23] This size range is considered to be large enough such that the body can collapse into a spheroidal shape, and thus be a dwarf planet. [10] [24] Astronomer Michael Brown considers 2018 VG 18 to be highly ...
The size of 2018 AG 37 is unmeasured, but it likely lies between 400–600 km (250–370 mi) in diameter assuming a geometric albedo range of 0.10–0.25. [20] Sheppard estimates that 2018 AG 37 's diameter lies at the lower end of this range, as he concludes that it has a highly reflective and ice-rich surface. [ 3 ]
Hence, assuming equal albedos, it has a diameter of 286 ± 24 km [12] According to the estimate from 2017 based on an improved modelling, the size of Actaea is slightly larger at 290 ± 21 km. [ 6 ] Actaea has the same color as Salacia (V−I = 0.89 ± 0.02 and 0.87 ± 0.01 , respectively), supporting the assumption of equal albedos.
[7]: 9 The depth of 2002 MS 4 's massive depression takes up 5.7% of 2002 MS 4 's diameter and exceeds those seen in the largest craters of other Solar System bodies of comparable size: the largest crater of Saturn's moon Mimas has a depth of up to 10–12 km (6.2–7.5 mi) [44]: 424 and Vesta's Rheasilvia crater has a depth of up to 25 km (16 mi).
Based on a generic magnitude-to-diameter conversion, 1996 TQ 66 measures approximately 185 kilometers (110 miles) in diameter, for an assumed albedo of 0.9 and an magnitude of 7. [ 4 ] [ 12 ] According to Mike Brown , who estimates a mean-diameter of 186 km (120 mi), the object is too small for being considered a dwarf planet candidate ...