Updated Satellite section and partially copied ilmarë article so... ATTRIBUTION GIVEN! Does this work
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{{main|Ilmarë}} |
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{{main|Ilmarë}} |
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Varda has one known [[Minor-planet moon|satellite]], '''Ilmarë''',[Stressed on the first syllable] formal designation '''{{nowrap|(174567) Varda I}}'''. Ilmarë was discovered by [[Keith S. Noll|Keith Noll]] in 2009, at a separation of about 0.12 arcsec, using discovery images taken by the [[Hubble Space Telescope]] on 26 April 2009, the discovery was reported in 2011.[ It is approximately 403 km in diameter according to the ALMA study done in 2025,] |
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Varda has one known [[Minor-planet moon|satellite]], [[Ilmarë]] (formal designation 174567 Varda I), which was discovered in 2009. It is estimated to be about 403 km in diameter (about 50% that of its primary), constituting 8% of the system mass, or {{val|2|e=19|u=kg}}, assuming its density and albedo are the same as that of Varda.{{efn|name=mass}} |
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The Varda–Ilmarë system is tightly bound, with a semi-major axis of {{val|4809|39|u=km}} (about 12 Varda radii) and an orbital period of 5.75 days. |
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== See also == |
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== See also == |
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[{{cite web|url=https://www.unicode.org/L2/L2021/21224-dwarf-planet-syms.pdf|title=Unicode request for dwarf-planet symbols|last=Miller|first=Kirk|date=26 October 2021|website=unicode.org}}]
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[{{cite web|url=https://www.unicode.org/L2/L2021/21224-dwarf-planet-syms.pdf|title=Unicode request for dwarf-planet symbols|last=Miller|first=Kirk|date=26 October 2021|website=unicode.org}}]
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[{{cite journal |last1=Sickafoose |first1=A. A. |last2=Bosh |first2=A. S. |last3=Levine |first3=S. E. |last4=Zuluaga |first4=C. A. |last5=Genade |first5=A. |last6=Schindler |first6=K. |last7=Lister |first7=T. A. |last8=Person |first8=M. J. |title=A stellar occultation by Vanth, a satellite of (90482) Orcus |journal=Icarus |date=1 February 2019 |volume=319 |pages=657–668 |doi=10.1016/j.icarus.2018.10.016 |arxiv=1810.08977 |bibcode=2019Icar..319..657S |s2cid=119099266 }}]
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[{{cite journal |last1=Brown |first1=Michael E. |last2=Butler |first2=Bryan J. |title=Masses and Densities of Dwarf Planet Satellites Measured with ALMA |journal=The Planetary Science Journal |date=1 October 2023 |volume=4 |issue=10 |pages=193 |doi=10.3847/PSJ/ace52a|doi-access=free |arxiv=2307.04848 |bibcode=2023PSJ.....4..193B }}]
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{{cite journal |title=The Pluto system: Initial results from its exploration by New Horizons |first1=S.A. |last1=Stern |first2=F. |last2=Bagenal |first3=K. |last3=Ennico |first4=G.R. |last4=Gladstone |first5=W.M. |last5=Grundy |first6=W.B. |last6=McKinnon |first7=J.M. |last7=Moore |first8=C.B. |last8=Olkin |first9=J.R. |last9=Spencer |journal=Science |date=October 16, 2015 |pmid=26472913 |article-number=aad1815 |volume=350 |issue=6258 |doi=10.1126/science.aad1815 |arxiv=1510.07704 |bibcode=2015Sci...350.1815S |s2cid=1220226 }} |
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[{{Cite report |url=https://meetingorganizer.copernicus.org/EPSC-DPS2025/EPSC-DPS2025-905.html |title=ALMA submm measurements of the trans-Neptunian binary system satellites Ilmarë, Actaea, Hi’iaka and Namaka |last=Kiss |first=Csaba |last2=Gabányi |first2=Krisztina |last3=Moór |first3=Attila |last4=Müller |first4=Thomas |last5=Fernandez-Valenzuela |first5=Estela |last6=Moullet |first6=Arielle |last7=Borkovits |first7=Tamás |last8=Kalup |first8=Csilla |date=2025-07-09 |publisher=Copernicus Meetings |issue=EPSC-DPS2025-905 |language=en}}]
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[{{cite journal |last1=Vilenius |first1=E. |last2=Kiss |first2=C. |last3=Mommert |first3=M. |last4=Müller |first4=T. |last5=Santos-Sanz |first5=P. |last6=Pal |first6=A. |last7=Stansberry |first7=J. |last8=Mueller |first8=M. |last9=Peixinho |first9=N. |last10=Fornasier |first10=S. |last11=Lellouch |first11=E. |last12=Delsanti |first12=A. |last13=Thirouin |first13=A. |last14=Ortiz |first14=J. L. |last15=Duffard |first15=R. |last16=Perna |first16=D. |last17=Szalai |first17=N. |last18=Protopapa |first18=S. |last19=Henry |first19=F. |last20=Hestroffer |first20=D. |last21=Rengel |first21=M. |last22=Dotto |first22=E. |last23=Hartogh |first23=P. |title='TNOs are Cool': A survey of the trans-Neptunian region |journal=Astronomy & Astrophysics |date=4 May 2012 |volume=541 |pages=A94 |doi=10.1051/0004-6361/201118743 |arxiv=1204.0697 |bibcode=2012A&A...541A..94V |s2cid=54222700 }}]
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