Back 2023 BU Arabic 2023 BU German 2023 BU Spanish ۲۰۲۳ بییو Persian 2023 BU French 2023 BU Italian 2023 BU Japanese 2023 BU Russian 2023 BU Swedish 2023 BU Ukrainian
 Radar image of 2023 BU by the Goldstone Solar System Radar on 29 January 2023 | |
| Discovery[1][2] | |
|---|---|
| Discovered by | Gennadiy Borisov |
| Discovery site | MARGO, Nauchnyi, Crimea |
| Discovery date | 21 January 2023 |
| Designations | |
| 2023 BU | |
| gb00553 | |
| NEO · Apollo | |
| Orbital characteristics[3] | |
| Epoch 25 February 2023 (JD 2460000.5) (Post-flyby orbit) | |
| Uncertainty parameter 1 | |
| Observation arc | 10 days (231 obs)[3] |
| Aphelion | 1.230 AU |
| Perihelion | 0.9840 AU |
| 1.107 AU | |
| Eccentricity | 0.1111 |
| 1.16 yr | |
| 28.7° | |
| Inclination | 3.75° |
| 125.5° | |
| 27 January 2023 04:30[4] | |
| 355.8° | |
| Earth MOID | 0.00046 AU (69,000 km; 0.18 LD) |
| Physical characteristics | |
| 3–8 meters (CNEOS)[5] | |
| ~77 seconds[6] | |
| 29.4±0.5 (JPL)[3] 29.4 (MPC)[1] | |
2023 BU is a near-Earth object that passed 9,967 ± 1 km (6,193.21 ± 0.62 mi) from the centerpoint of Earth around 27 January 2023 00:29 UT.[3] Since Earth's radius is about 6,378 km (3,963 mi), it was expected to pass approximately 3,589 ± 1 km (2,230.10 ± 0.62 mi) from the surface of Earth over the southern tip of South America.[7] It passed at an altitude above low Earth orbit which is 2,000 km (1,200 mi) and below geostationary orbit which is 36,000 km (22,000 mi). The asteroid is about 3–8 meters in diameter[5] and approached Earth from the night sky. It is the fourth closest non-impacting approach known to Earth (excluding Earthgrazers) after 2020 VT4, 2020 QG, and 2021 UA1.
- ^ a b Cite error: The named reference
MPC-objectwas invoked but never defined (see the help page). - ^ Cite error: The named reference
MPEC-2023-B72was invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
jpldatawas invoked but never defined (see the help page). - ^ Cite error: The named reference
Perihelionwas invoked but never defined (see the help page). - ^ a b Cite error: The named reference
JPL12was invoked but never defined (see the help page). - ^ Northolt Branch Observatory: 77 seconds with an amplitude of 0.9 mag
- ^ Cite error: The named reference
NASA20230125was invoked but never defined (see the help page).