C/2010 U3 (Boattini) (original) (raw)
C/2010 U3 (Boattini) is the hyperbolic comet with the longest observation arc and took around a million years to complete half an orbit from its furthest distance in the Oort cloud. It was discovered on 31 October 2010 by Andrea Boattini in images taken with the Mount Lemmon Survey's 1.5-m reflector. The perihelion point is outside of the inner Solar System.
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| dbo:abstract | C/2010 U3 (Boattini) is the hyperbolic comet with the longest observation arc and took around a million years to complete half an orbit from its furthest distance in the Oort cloud. It was discovered on 31 October 2010 by Andrea Boattini in images taken with the Mount Lemmon Survey's 1.5-m reflector. The perihelion point is outside of the inner Solar System. The comet has an observation arc of 15 years allowing a very good estimate of the inbound (original) and outbound (future) orbits. The orbit of a long-period comet is properly obtained when the osculating orbit is computed at an epoch after leaving the planetary region and is calculated with respect to the center of mass of the Solar System. Inbound JPL Horizons shows an epoch 1950 barycentric orbital period of 2.2 millions years with aphelion of 34,000 AU (0.5 ly) from the Sun. Hui et al 2019 has a similar inbound orbital period of 2 million years. Outbound with an epoch of 2050 JPL Horizons shows a period of approximately 350,000 years and an aphelion distance of 9,900 AU (0.2 ly). The generic JPL Small-Body Database browser uses a near-perihelion epoch of 2017-Jun-01 which is before the comet left the planetary region and makes the highly eccentric aphelion point inaccurate since it does not account for any planetary perturbations after that epoch. The heliocentric JPL Small-Body Database solution also does not account for the combined mass of the Sun+Jupiter. Precovery images from November 2005 when the comet was active 25.8 AU (3.86 billion km) from the Sun are known. The comet was seen to outburst in 2009 and 2017. The coma and tail consist of dust grains about 20 μm in diameter ejected at less than 50 meters per second (110 miles per hour). Supervolatiles such as CO and CO2 can generate activity when a comet is this far from the Sun. (en) C/2010 U3 (Boattini) es un cometa de periodo largo descubierto el 31 de octubre de 2010 por el astrónomo italiano Andrea Boattini, cuando se encontraba todavía a 18,4 unidades astronómicas (ua) del Sol, prácticamente a la misma distancia de la órbita de Urano, la mayor distancia a la que se ha encontrado un cometa, con una magnitud de +19. Imágenes pre-descubrimiento tomadas por el Observatorio Canada, Francia, Hawái, entre 2005 y 2006, muestran que ya tenía actividad cuando se encontraba entre 25,8 y 24, 6 ua del Sol. Pasó por el perihelio el 25 de febrero de 2019 a una distancia de 8,4 ua el Sol, también uno de los más lejanos perihelios de los cometas conocidos. Como la sublimación del agua en los cometas empieza a producirse en los mismos a distancias más cercanas a Sol de 5 ua, se deduce que su actividad no se debe a esa causa sino a la de sublimación de compuestos supervolatiles como el CO y el CO2. Aunque su origen está en la nube de Oort, estudios sobre la trayectoria de este cometa indican que tuvo un primer paso por el perihelio hace al menos 1,96 millones de años, siendo por tanto considerado como dinámicamente viejo, sin que la actividad observada en este último paso por el perihelio pueda deberse al calor retenido por su anterior paso. (es) C/2010 U3 (Boattini) è la sedicesima cometa scoperta dall'astronomo italiano Andrea Boattini. Si tratta di una cometa dalle caratteristiche inusuali, sia per il diametro del suo nucleo, dell'ordine dei 100 km, sia per la distanza perielica, a metà strada tra le orbite di Giove e Saturno, sia per il tempo della scoperta, quasi nove anni prima del passaggio al perielio. I suoi elementi orbitali sono ancora relativamente incerti in quanto per precisarli occorrerà seguire la cometa lungo un maggior arco osservativo: gli ultimi dati (2018) indicano che si tratta di una cometa a lunghissimo periodo . Per osservarla occorrerà usare almeno dei telescopi di media grandezza. (it) |
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| dbo:wikiPageWikiLink | dbr:Carbon_dioxide dbr:Carbon_monoxide dbr:Precovery dbr:Barycenter dbr:Julian_day dbr:Perihelion dbr:Perturbation_(astronomy) dbc:Astronomical_objects_discovered_in_2010 dbr:Comet dbr:Andrea_Boattini dbr:Oort_cloud dbr:Volatiles dbr:Epoch_(astronomy) dbr:Osculating_orbit dbr:Aphelion dbc:Non-periodic_comets dbr:Coma_(cometary) dbr:Comet_tail dbr:Orbital_period dbr:Julian_year_(astronomy) dbr:Astronomical_Unit dbr:Jupiter dbr:JPL_Horizons_On-Line_Ephemeris_System dbr:JPL_Small-Body_Database dbc:Oort_cloud dbr:Inner_Solar_System dbr:Micrometre dbr:Observation_arc dbr:Reflecting_telescope dbr:Mount_Lemmon_Survey |
| dbp:aphelion | ~34,000 AU (en) ~9,900 AU (en) |
| dbp:discoverer | 1.500000 (xsd:double) dbr:Andrea_Boattini dbr:Mount_Lemmon_Survey |
| dbp:discoveryDate | 2010-10-31 (xsd:date) |
| dbp:eccentricity | 0.982000 (xsd:double) 0.999500 (xsd:double) 1.000900 (xsd:double) |
| dbp:epoch | 2017 (xsd:integer) (en) |
| dbp:inclination | 55.512000 (xsd:double) |
| dbp:jupiterMoid | 6.33 (dbd:astronomicalUnit) |
| dbp:lastP | 2019-02-26 (xsd:date) |
| dbp:name | C/2010 U3 (en) |
| dbp:obsArc | 4.891428E8 (dbd:second) |
| dbp:orbit | dbr:Oort_cloud |
| dbp:perihelion | (en) 8.4458 (dbd:astronomicalUnit) |
| dbp:period | 1.104516E13 (dbd:second) 6.942672E13 (dbd:second) |
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| dct:subject | dbc:Astronomical_objects_discovered_in_2010 dbc:Non-periodic_comets dbc:Oort_cloud |
| rdfs:comment | C/2010 U3 (Boattini) is the hyperbolic comet with the longest observation arc and took around a million years to complete half an orbit from its furthest distance in the Oort cloud. It was discovered on 31 October 2010 by Andrea Boattini in images taken with the Mount Lemmon Survey's 1.5-m reflector. The perihelion point is outside of the inner Solar System. (en) C/2010 U3 (Boattini) es un cometa de periodo largo descubierto el 31 de octubre de 2010 por el astrónomo italiano Andrea Boattini, cuando se encontraba todavía a 18,4 unidades astronómicas (ua) del Sol, prácticamente a la misma distancia de la órbita de Urano, la mayor distancia a la que se ha encontrado un cometa, con una magnitud de +19. Imágenes pre-descubrimiento tomadas por el Observatorio Canada, Francia, Hawái, entre 2005 y 2006, muestran que ya tenía actividad cuando se encontraba entre 25,8 y 24, 6 ua del Sol. (es) C/2010 U3 (Boattini) è la sedicesima cometa scoperta dall'astronomo italiano Andrea Boattini. Si tratta di una cometa dalle caratteristiche inusuali, sia per il diametro del suo nucleo, dell'ordine dei 100 km, sia per la distanza perielica, a metà strada tra le orbite di Giove e Saturno, sia per il tempo della scoperta, quasi nove anni prima del passaggio al perielio. (it) |
| rdfs:label | C/2010 U3 (Boattini) (en) C/2010 U3 (Boattini) (es) C/2010 U3 Boattini (it) |
| owl:sameAs | wikidata:C/2010 U3 (Boattini) dbpedia-es:C/2010 U3 (Boattini) dbpedia-it:C/2010 U3 (Boattini) https://global.dbpedia.org/id/3MqLM |
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