Jupiter
Table:
Jupiter

Near-true colour view in 2019[a]

Designations
Pronunciation	/ˈdʒuːpɪtər/ ⓘ[1]
Adjectives	Jovian
Symbol
Orbital characteristics[2]
Epoch J2000
Aphelion	816.62 million km (5.4588 AU)
Perihelion	740.52 million km (4.9501 AU)

Semi-major axis

778.57 million km (5.2044 AU)
Eccentricity	0.0489

Orbital period (sidereal)

11.862 yr

4,332.59 d

10,475.8 Jovian solar days[3]

Orbital period (synodic)

398.88 d

Average orbital speed

13.07 km/s (8.12 mi/s)

Mean anomaly

20.020°[4]
Inclination

1.303° to ecliptic[4]

6.09° to Sun's equator[4]

0.32° to invariable plane[5]

Longitude of ascending node

100.464°

Argument of perihelion

273.867°[4]
Known satellites	79 (as of 2018[update])[6]
Physical characteristics[2][7][8]

Mean radius

69,911 km (43,441 mi)[b]

Equatorial radius

71,492 km (44,423 mi)[b]

11.209 Earths

Polar radius

66,854 km (41,541 mi)[b]

10.517 Earths

Flattening	0.06487

Surface area

6.1419×1010 km2 (2.3714×1010 sq mi)[b][9]

121.9 Earths

Volume

1.4313×1015 km3 (3.434×1014 cu mi)[b]

1,321 Earths

Mass

1.8982×1027 kg (4.1848×1027 lb)

317.8 Earths

1/1047 Sun[10]

Mean density

1,326 kg/m3 (2,235 lb/cu yd)[c]

Surface gravity

24.79 m/s2 (81.3 ft/s2)[b]
2.528 g

Moment of inertia factor

0.2756±0.0006[11]

Escape velocity

59.5 km/s (37.0 mi/s)[b]

Sidereal rotation period

9.925 hours[12] (9 h 55 m 30 s)

Equatorial rotation velocity

12.6 km/s (7.8 mi/s; 45,000 km/h)

Axial tilt

3.13° (to orbit)

North pole right ascension

268.057°; 17h 52m 14s

North pole declination

64.495°
Albedo	0.503 (Bond)[13]
0.538 (geometric)[14]

Surface temp.
min
mean
max

1 bar level

165 K (−108 °C)

0.1 bar

112 K (−161 °C)

Apparent magnitude

−2.94[15] to −1.66[15]

Angular diameter

29.8″ to 50.1″
Atmosphere[2]

Surface pressure

20–200 kPa;[16] 70 kPa[17]

Scale height

27 km (17 mi)
Composition by volume	by volume:

89%±2.0%	hydrogen (H2)
10%±2.0%	helium (He)
0.3%±0.1%	methane (CH4)
0.026%±0.004%	ammonia (NH3)
0.0028%±0.001%	hydrogen deuteride (HD)
0.0006%±0.0002%	ethane (C2H6)
0.0004%±0.0004%	water (H2O)

Ices:

ammonia (NH3)

water (H2O)

ammonium hydrosulfide (NH4SH)

Looking at the table, assess whether the statement is entailed, neutral, or refuted. Give your final answer in JSON format {"answer": "YOUR ANSWER"}.

Hypothesis: Scientists are still studying to find satellites of Jupiter.

answer: neutral