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Asteroids with Satellites Database--Johnston's Archive
(1626) Sadeya
compiled by Wm. Robert Johnston
last updated30 April 2022--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: | 2.3643270258 AU | | orbital periodP: | 3.6354763167 yr
(= 1327.8828034 d) | | eccentricitye: | 0.272979485 | | perihelion distanceq: | 1.718914252 AU | | aphelion distanceQ: | 3.0097398001 AU | | inclinationi: | 25.3121397° | | argument of perihelionω: | 149.233004° | | ascending nodeΩ: | 279.483869° | | mean anomalyM: | 281.6619921° | | perihelion passageTP: | 2021 Mar 15.954704 | | Epoch: | 2021 Jul 01 | | data arc: | 1927-2020(2686 obs.) | | Earth MOID: | 0.76304 AU | | Jupiter Tisserand invariantTJ: | 3.373 |
orbital data, secondary: | semimajor axisas: | 54 km[*E] | | separation/primary radiusas/rp: | 7.4 [*E] | | separation/Hill radiusas/rH: | 0.027 [*E] | | orbital periodPs: | 2.138± 0.008d [B20d] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 11.2[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 15.14± 0.49 km [M12b] | | geometric albedo: | 0.486± 0.067[M12b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 2000 km [*E] |
other data, primary: | diameterdp: | 14.65± 0.48 km [*D] | | rotation periodRPp: | 3.4202± 0.0002h [B20d] | | amplitude in mag., rotationalΔM: | 0.16 [B20d] | | amplitude in mag., mutual eventsΔM: | 0.085 ±0.015 [B20d] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 3.81± 0.32km [*D] | | diameter ratiods/dp: | 0.26± 0.02 [B20d] | | component mag. differenceΔM: | 2.93± 0.17 [*D] | | rotation periodRPs: | ? | |
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--(1626) Sadeya --discovery and notes:
Primary discovered1927 Jan 10from Barcelona, Spainby J. Comas Sola.Alternate designation(s):1927 AA, 1956 AA.Permanent number assigned -.
Named 1964 Jan 30 for the Sociedad Astronomica de Espana y America [MPC002277].
Companion discovered2020 Aug 01 by Benishek, V., P. Pravec, A. Marchini, R. Papini, F. Salvaggio, V. Chiorny, and M. Husarikusinglightcurve observations from Sopot Observatory, Serbia; Astronomical Observatory of the University of Siena; Chuguev Station, Kharkiv Observatory, Ukraine; Skalnate Pleso Observatory.Announced2020 Dec 01 [B20d].
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--Links to ADS abstracts:
©2020-2021, 2022by Wm. Robert Johnston.
Last modified30 April 2022.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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