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Ilmarë, formal designation (174567) Varda I, is the only known moon of the large Kuiper belt object 174567 Varda. It was discovered by Keith Noll et al. in 2009, at a separation of about 0.12 arcsec, using discovery images taken by the Hubble Space Telescope on 26 April 2009, and reported in 2011.
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varda moon km size albedo density mass system trans-neptunian cm3 orbital discovery approximately would known object keith noll lower ratio
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Ilmarë | Absolute magnitude (H) | Varda + 1.7 | 1.00 | infobox |
| Ilmarë | Adjectives | Ilmarëan /ɪlməˈriːən/ | 1.00 | infobox |
| Ilmarë | Albedo | 0.068±0.011 (2025) ≈0.085 (2020) | 1.00 | infobox |
| Ilmarë | Alternative names | (174567) Varda I | 1.00 | infobox |
| Ilmarë | Designation | Varda I | 1.00 | infobox |
| Ilmarë | Discovered by | Keith S. Noll et al. | 1.00 | infobox |
| Ilmarë | Discovery date | 2009, based on images taken on 26 April 2009 | 1.00 | infobox |
| Ilmarë | Eccentricity | 0.016±0.004 | 1.00 | infobox |
| Ilmarë | Inclination | 77.4±1.9 | 1.00 | infobox |
| Ilmarë | Mass | ≈2.2×1019 kg (2015) ~16% of Varda (2025)[a] ~11% of Varda (2025)[b] | 1.00 | infobox |
| Ilmarë | Mean density | 1.24+0.50 −0.35 g/cm3 (system)[c] 0.7 g/cm3[d] 1.15 g/cm3[e] | 1.00 | infobox |
| Ilmarë | Mean diameter | 403±40 km | 1.00 | infobox |
| Ilmarë | Named after | Ilmarë (figure by J. R. R. Tolkien) | 1.00 | infobox |
| Ilmarë | Orbital period (sidereal) | 5.750824±0.000016 d | 1.00 | infobox |
| Ilmarë | Pronunciation | /ˈɪlməriː/ | 1.00 | infobox |
| Ilmarë | Satellite of | Varda | 1.00 | infobox |
| Ilmarë | Semi-major axis | 4815±29 km | 1.00 | infobox |
| Ilmarë | Spectral type | B−V = 0.857±0.061 V−I = 1.266±0.052 | 1.00 | infobox |
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