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Asteroids with Satellites Database--Johnston's Archive
(22899) Alconradand Juliekaibarreto
compiled by Wm. Robert Johnston
last updated14 October 2024--Orbital and physical data--
(Seethis page for definitions of quantities; source codes in brackets, seethis link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:main belt asteroid
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 2.84337911752 AU | | orbital periodP: | 4.7946880502 yr
(= 1751.25981034 d) | | eccentricitye: | 0.08558069822 | | perihelion distanceq: | 2.6000407473 AU | | aphelion distanceQ: | 3.0867174877 AU | | inclinationi: | 2.882641262° | | argument of perihelionω: | 219.3535303° | | ascending nodeΩ: | 135.88616225° | | mean anomalyM: | 116.2520776° | | perihelion passageTP: | 2023 Mar 31.4789129 | | Epoch: | 2024 Oct 17 | | data arc: | 1994-2024(3350 obs.) | | Earth MOID: | 1.59532 AU | | Jupiter Tisserand invariantTJ: | 3.301 |
orbital data, secondary: | binary dynamical type: | W [P07f] | | semimajor axisas: | 182 km[D10a] | | separation/primary radiusas/rp: | 66 [*E] | | separation/Hill radiusas/rH: | 0.16 [*E] | | orbital periodPs: | 56d [M04a] | | eccentricityes: | ? | | normalized ang. mom.αL: | 0.76[M09a] |
| other data, system (combined):| absolute mag.H: | 13.93[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 5.68± 0.47 km [M11b] | | geometric albedo: | 0.181± 0.028[M11b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 1100 km [*E] |
other data, primary: | diameterdp: | 5.55± 0.46 km [*D] | | rotation periodRPp: | 4.03± 0.03h [P11b] | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 1.23km [*D] | | diameter ratiods/dp: | 0.222 [D10a] | | component mag. differenceΔM: | 2.5 [I8232] | | rotation periodRPs: | ? | |
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--(22899) Alconrad and Juliekaibarreto --discovery and notes:
Primary discovered1999 Oct 11from Višnjan, Croatiaby K. Korlevic and M. Juric.Alternate designation(s):1999 TO14, 1998 ML48.Linked to prediscovery observations from 1994 Oct 09.Permanent number assigned 2001 Mar 09.
Named 2016 Jun 20 for Albert R. Conrad (1953-) [MPC100606].
Companion discovered2003 Jul 26 by W. J. Merline, P. M. Tamblyn, C. R. Chapman, D. Nesvorny, D. D. Durda, C. Dumas, A. D. Storrs, L. M. Close, and F. MenardusingHubble Space Telescope observations from Hubble Space Telescope.Announced2003 Oct 26 [M03j].Provisional designation S/2003 (22899) 1.Permanent designation I Juliekaibarreto, assigned 2024 Oct 14; named for Julie Kai Barreto (1955-) [WGSBN0414].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Jacobson, Seth A., Scheeres, Daniel J., & McMahon, Jay 2014, The Astrophysical JournalFormation of the Wide Asynchronous Binary Asteroid Population
- Merline, W. J., Tamblyn, P. M., Nesvorny, D., Durda, D. D., Chapman, C. R., Dumas, C., Storrs, A. D., Feldman, B., Owen, W. M., Close, L. M., & Menard, F. 2004, Bulletin of the American Astronomical SocietyDiscovery of binaries among small asteroids in the Koronis dynamical family using the HST Advanced Camera for Surveys
- Merline, William 2004, HST ProposalDetermination of orbits and colors for two new binaries in the Koronis asteroid family
- Merline, W. J., Tamblyn, P. M., Chapman, C. R., Nesvorny, D., Durda, D. D., Dumas, C., Storrs, A. D., Close, L. M., & Menard, F. 2003, International Astronomical Union CircularS/2003 (22899) 1
©2003-2016, 2024by Wm. Robert Johnston.
Last modified14 October 2024.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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