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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
The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...
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 ...
A 2023 study of (307261) 2002 MS 4 shows that it probably has an extremely large crater, whose depth takes up 5.7% of its diameter: this is proportionally larger than the Rheasilvia crater on Vesta, which is the reason Vesta is not usually considered a dwarf planet today.
Sedna is a trans-Neptunian object with the minor-planet number 90377. It was discovered on November 14, 2003, by the astronomers Michael Brown , Chad Trujillo , and David Rabinowitz . As of 2023, Sedna is 84 astronomical units (AU) from the Sun , which is almost three times the distance between Neptune and the Sun. Sedna's orbit is an ellipse ...
Denis Moskowitz, a software engineer in Massachusetts, [94] proposed astronomical symbols for the dwarf planets Quaoar, Sedna, Orcus, Haumea, Eris, Makemake, and Gonggong. [ 95 ] [ 94 ] These symbols are somewhat standard among astrologers (e.g. in the program Astrolog ), [ 96 ] which is where planetary symbols are most used today.
Below you’ll find the July 2023 SNAP payout schedule for all 50 states and the District of Columbia, Guam and the U.S. Virgin Islands: Alabama (July 4th-23rd) Alaska (July 1st)
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