2015 BP513 (also written 2015 BP513) is an Apollo near-Earth asteroid roughly 12–27 meters in diameter that passed less than 1 lunar distance from Earth on 18 January 2015.[5]
Discovery[1][2][3] | |
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Discovered by | Pan-STARRS 1 (first observered) |
Discovery site | Haleakala Obs. |
Discovery date | 27 January 2015 |
Designations | |
MPC designation | 2015 BP513 |
Minor planet category | Apollo · NEO[1][2] |
Orbital characteristics[1] | |
Epoch 16 February 2017 (JD 2457800.5) | |
Uncertainty parameter 7 | |
Observation arc | yr (10 days) |
Aphelion | 2.5160 AU |
Perihelion | 0.9450 AU |
Semi-major axis | 1.7305 AU |
Eccentricity | 0.4539 |
Orbital period (sidereal) | 2.28 yr (831 days) |
Mean anomaly | 338.74° |
Mean motion | 0° 25m 58.8s / day |
Inclination | 0.4894° |
Longitude of ascending node | 115.43° |
Argument of perihelion | 333.76° |
Earth MOID | 0.0004 AU |
Physical characteristics | |
Dimensions | 12–27 meters[4] |
Absolute magnitude (H) | 26.7[1] |
Until 18 January 2015 18:00 UT the small dim asteroid either had an elongation less than 45 degrees from the Sun or was significantly fainter than apparent magnitude 23.[6] On 18 January 2015 13:36 UT the asteroid passed 0.00082 AU (123,000 km; 76,000 mi) from the Moon and at 17:09 UT passed 0.0016 AU (240,000 km; 150,000 mi) from Earth.[5] The asteroid was not discovered until 9 days later on 27 January 2015 by Pan-STARRS at an apparent magnitude of 21 using a 1.8-meter (71 in) Ritchey–Chrétien telescope.[3] Two precovery images from 19 January 2015 when the asteroid was apparent magnitude 16 were then located.[2]
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