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|---|---|
| Discovered by | Mt. Lemmon Survey |
| Discovery date | January 20, 2013 |
| Designations | |
| Minor planet category | trans-Neptunian object Centaur Oort cloud object Damocloid |
| Orbital characteristics | |
| Epoch 2013-apr-18 (JD 2456400.5) | |
| Aphelion | 2448.295 |
| Perihelion | 8.3743718 (q) ±0.000 010 411 |
| Semi-major axis | 1228.3346623 (a) |
| Eccentricity | 0.9931823 ±0.000 008 026 |
| Orbital period (sidereal) | 43,050 years (~15,723,600 days) |
| Mean anomaly | 0.00852° |
| Inclination | 98.58507 ±0.000 030 601 |
| Longitude of ascending node | 180.19151° ±0.000 005 928 |
| Argument of perihelion | 166.12868° ±0.000 373 730 |
| Known satellites | none known |
| Physical characteristics | |
| Dimensions | ~30km |
| Absolute magnitude (H) | 10.8 |
2013 BL76 is a minor planet (Centaur) from the inner Oort Cloud. It holds the record for the minor planet with the largest semi-major axis in the Solar system. With an absolute magnitude (H) of 10.8, the object has an estimated diameter of 30km. Since it has not been seen out-gassing, it is not known if it is a comet or not.
2013 BL76 came to perihelion 8.3AU from the Sun in October 2012 when it reached an apparent magnitude of about 20. In 1927, when it was 100AU from the Sun, it had an apparent magnitude of about 30.8. For comparison dwarf planet 90377 Sedna had an apparent magnitude of 21.7 when it was 100AU from the Sun.
largest semimajor axes of minor planets
| name | designation | semi major axis | perihelion | aphelion |
|---|---|---|---|---|
| 2002 GB32 | 207 | 35.341 | 380 | |
| 2001 FP185 | 82158 | 218 | 34.231 | 402 |
| 2012 KA51 | 224 | 4.910 | 444 | |
| 2000 CR105 | 148209 | 230 | 44.166 | 415 |
| 2006 UL321 | 261 | 23.494 | 498 | |
| 1996 PW | 271 | 2.557 | 540 | |
| 2011 OR17 | 287 | 3.099 | 571 | |
| 2010 NV1 | 336756 | 313 | 9.419 | 617 |
| 2004 VN112 | 339 | 47.332 | 631 | |
| 2009 MS9 | 359 | 11.003 | 706 | |
| 2010 GB174 | 365 | 48.516 | 681 | |
| 2010 BK118 | 484 | 6.106 | 963 | |
| 2007 DA61 | 518 | 2.656 | 1034 | |
| 2003 VB12 | 90377 Sedna | 540 | 76.184 | 1003 |
| 2007 TG422 | 546 | 35.582 | 1057 | |
| 2000 OO67 | 87269 | 587 | 20.794 | 1152 |
| 2002 RN109 | 747 | 2.703 | 1491 | |
| 2006 SQ372 | 308933 | 780 | 24.177 | 1536 |
| 2013 AZ60 | 1027 | 7.909 | 2046 | |
| 2005 VX3 | 1109 | 4.132 | 2213 | |
| 2012 DR30 (2009 FW54) | 1160 | 14.540 | 2305 | |
| 2013 BL76 | 1228 | 8.374 | 2448 |
References
- ^ "2013 BL76". Seicchi Yoshida's Home Page. Retrieved 2013-07-12.
- "MPEC 2013-C12 : 2013 BL76". IAU Minor Planet Center. 2013-02-03. Retrieved 2013-10-14. (K13B76L)
- ^ "2013 BL76". IAU minor planet center. Retrieved 2013-07-12.
- ^ "Absolute Magnitude (H)". NASA/JPL. Retrieved 2013-10-13.
- "JPL Small-Body Database Search Engine: Asteroids and a > 100 (AU)". JPL Solar System Dynamics. Retrieved 2013-10-13.
- "AstDys 2013BL76 Ephemerides for 1927 (when 100AU from Sun)". Department of Mathematics, University of Pisa, Italy. Retrieved 2013-10-14.
- "AstDys (90377) Sedna Ephemerides for 1975 (when 100AU from Sun)". Department of Mathematics, University of Pisa, Italy. Retrieved 2013-10-14.