87 Sylvia

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Explore the main themes, entities and connections around 87 Sylvia. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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Satellite system

Romulus Remus Keck II telescope Michael E. Brown Jean-Luc Margot

12 related topics

Discovery and naming

N. R. Pogson Madras (Chennai)India Antonio Paluzie-Borrell Paul Herget

9 related topics

Physical characteristics

Mass distribution

1 related topics

Overview

Sylvia family Cybele group Main asteroid belt Moon

4 related topics

Key facts & relationships

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Absolute magnitude (H): 6.94
Adjectives: Sylvian (/ˈsɪlviən/ SIL-vee-ən)
Alternative designations: A909 GA
Aphelion: 3.81 AU (560 million km)
Argument of perihelion: 263°
Average orbital speed: 15.94 km/s[citation needed]

Topics to explore

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Satellite system

Romulus Romulus (moon)
Remus Remus (moon)
Keck II telescope Keck telescope
Michael E. Brown
Jean-Luc Margot
Franck Marchis
UC Berkeley
Pascal Descamps Pascal Descamps?action=edit&redlink=1
Daniel Hestroffer Daniel Hestroffer?action=edit&redlink=1
Jérôme Berthier Jérôme Berthier?action=edit&redlink=1
Observatoire de Paris
Albedo

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Map overview Semantic statistics

Nodes31

Edges30

Triples83

Avg. degree1.94

Density0.064516

Components1

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87 Sylvia

Top relations

related to External links · 51

87 Sylvia → AstDyS-2, Asteroidal Satellite, Asteroids, August, Data, December, Discovery, Dubreuil, Dynamic SiteEphemeris, Ephemeris, ESO, First, Frappa, Her Twins, Includes, Instability, January, Johnston, Johnston's, JPL Small-Body DatabaseClose

Absolute magnitude (H) · 1

87 Sylvia → 6.94

Adjectives · 1

87 Sylvia → Sylvian (/ˈsɪlviən/ SIL-vee-ən)

Alternative designations · 1

87 Sylvia → A909 GA

Aphelion · 1

87 Sylvia → 3.81 AU (560 million km)

Argument of perihelion · 1

87 Sylvia → 263°

Average orbital speed · 1

87 Sylvia → 15.94 km/s[citation needed]

Dimensions · 1

87 Sylvia → (363 × 249 × 191) ±5 km (MPCD) or (374 × 248 × 194) ±5 km (ADAM)

Discovered by · 1

87 Sylvia → Norman Robert Pogson

Discovery date · 1

87 Sylvia → 16 May 1866

Important terminology Word statistics

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Important terminology

sylvia discovery 87 asteroid romulus discovered satellites remus asteroids first pogson minor orbital main belt moon 1866 one cybele satellite

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
87 Sylvia	Absolute magnitude (H)	6.94	1.00	infobox
87 Sylvia	Adjectives	Sylvian (/ˈsɪlviən/ SIL-vee-ən)	1.00	infobox
87 Sylvia	Alternative designations	A909 GA	1.00	infobox
87 Sylvia	Aphelion	3.81 AU (560 million km)	1.00	infobox
87 Sylvia	Argument of perihelion	263°	1.00	infobox
87 Sylvia	Average orbital speed	15.94 km/s[citation needed]	1.00	infobox
87 Sylvia	Dimensions	(363 × 249 × 191) ±5 km (MPCD) or (374 × 248 × 194) ±5 km (ADAM)	1.00	infobox
87 Sylvia	Discovered by	Norman Robert Pogson	1.00	infobox
87 Sylvia	Discovery date	16 May 1866	1.00	infobox
87 Sylvia	Eccentricity	0.094	1.00	infobox
87 Sylvia	Geometric albedo	0.0435	1.00	infobox
87 Sylvia	Inclination	10.9°	1.00	infobox
87 Sylvia	Known satellites	2	1.00	infobox
87 Sylvia	Longitude of ascending node	73°	1.00	infobox
87 Sylvia	Mass	(14.76±0.06)×1018 kg (14.6±0.1)×1018 kg	1.00	infobox
87 Sylvia	Mean anomaly	213°	1.00	infobox
87 Sylvia	Mean density	1.378±0.045 g/cm3	1.00	infobox
87 Sylvia	Mean diameter	271±5 km (MPCD) or 274±5 km (ADAM)	1.00	infobox
87 Sylvia	Mean motion	0° 9m 6.48s / day	1.00	infobox
87 Sylvia	Minor planet category	main belt · (outside core) Sylvia · Cybele	1.00	infobox
87 Sylvia	Named after	Rhea Silvia	1.00	infobox
87 Sylvia	North pole declination	+83.5°±5°	1.00	infobox
87 Sylvia	North pole right ascension	14.3°±5°	1.00	infobox
87 Sylvia	Orbital period (sidereal)	6.5 a (2372 d)	1.00	infobox
87 Sylvia	Perihelion	3.15 AU (480 million km)	1.00	infobox
87 Sylvia	Pole ecliptic latitude	+64.2°±5°	1.00	infobox
87 Sylvia	Pole ecliptic longitude	75.3°±5°	1.00	infobox
87 Sylvia	Pronunciation	/ˈsɪlviə/ SIL-vee-ə	1.00	infobox
87 Sylvia	Semi-major axis	3.48 AU (520 million km)	1.00	infobox
87 Sylvia	Spectral type	X	1.00	infobox

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