Discovery [1] | |
---|---|
Discovered by |
K. Korlević M. Jurić |
Discovery site | Višnjan Obs. |
Discovery date | 16 March 1999 |
Designations | |
(38063) 1999 FH | |
1999 FH · 2000 SY275 | |
Mars-crosser [1] [2] [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 25.07 yr (9,158 days) |
Aphelion | 3.0288 AU |
Perihelion | 1.6559 AU |
2.3424 AU | |
Eccentricity | 0.2931 |
3.59 yr (1,309 days) | |
324.91 ° | |
0° 16m 29.64s / day | |
Inclination | 11.880° |
193.25° | |
108.31° | |
Physical characteristics | |
Dimensions | 3.395±0.703 km
[4] 3.92 km (calculated) [3] 4.17±0.42 km [5] |
990±50 h [6] [a] | |
0.176±0.035
[5] 0.20 (assumed) [3] 0.287±0.172 [4] | |
L [7] · S [3] | |
14.00 [7] · 14.4 [1] [3] [4] [5] · 14.50±0.13 [8] | |
(38063) 1999 FH is a rare-type asteroid from the inner regions of the asteroid belt, classified as Mars-crosser and exceptionally slow rotator, approximately 4 kilometers in diameter. It was discovered on 16 March 1999, by Croatian astronomers Korado Korlević and Mario Jurić at Višnjan Observatory in Croatia. [2]
1999 FH orbits the Sun at a distance of 1.7–3.0 AU once every 3 years and 7 months (1,309 days). Its orbit has an eccentricity of 0.29 and an inclination of 12 ° with respect to the ecliptic. [1] A first precovery was taken at Steward Observatory in 1992, extending the body's observation arc by 7 years prior to its official discovery observation. [2]
SDSS photometry characterized 1999 FH as a rare and reddish L-type, which belong to the larger complex of stony asteroids. [7]
In September 2014, American astronomer Robert Stephens obtained a rotational lightcurve from photometric observations taken at the Center for Solar System Studies (CS3, U81) in California. [a] It gave an exceptionally long rotation period of 990±50 hours with a brightness amplitude of 0.55 magnitude ( U=2), which makes it one of the slowest rotators known to exist. It is also a suspected tumbling asteroid, which show a non-principal axis rotation. [6]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, 1999 FH measures 3.395 and 4.17 kilometers in diameter and its surface has an albedo of 0.287 and 0.176, respectively. [4] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 3.92 kilometers with an absolute magnitude of 14.4. [3]
This minor planet was numbered by the Minor Planet Center on 28 March 2002. [9] As of 2018, it has not been named. [2]
Discovery [1] | |
---|---|
Discovered by |
K. Korlević M. Jurić |
Discovery site | Višnjan Obs. |
Discovery date | 16 March 1999 |
Designations | |
(38063) 1999 FH | |
1999 FH · 2000 SY275 | |
Mars-crosser [1] [2] [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 25.07 yr (9,158 days) |
Aphelion | 3.0288 AU |
Perihelion | 1.6559 AU |
2.3424 AU | |
Eccentricity | 0.2931 |
3.59 yr (1,309 days) | |
324.91 ° | |
0° 16m 29.64s / day | |
Inclination | 11.880° |
193.25° | |
108.31° | |
Physical characteristics | |
Dimensions | 3.395±0.703 km
[4] 3.92 km (calculated) [3] 4.17±0.42 km [5] |
990±50 h [6] [a] | |
0.176±0.035
[5] 0.20 (assumed) [3] 0.287±0.172 [4] | |
L [7] · S [3] | |
14.00 [7] · 14.4 [1] [3] [4] [5] · 14.50±0.13 [8] | |
(38063) 1999 FH is a rare-type asteroid from the inner regions of the asteroid belt, classified as Mars-crosser and exceptionally slow rotator, approximately 4 kilometers in diameter. It was discovered on 16 March 1999, by Croatian astronomers Korado Korlević and Mario Jurić at Višnjan Observatory in Croatia. [2]
1999 FH orbits the Sun at a distance of 1.7–3.0 AU once every 3 years and 7 months (1,309 days). Its orbit has an eccentricity of 0.29 and an inclination of 12 ° with respect to the ecliptic. [1] A first precovery was taken at Steward Observatory in 1992, extending the body's observation arc by 7 years prior to its official discovery observation. [2]
SDSS photometry characterized 1999 FH as a rare and reddish L-type, which belong to the larger complex of stony asteroids. [7]
In September 2014, American astronomer Robert Stephens obtained a rotational lightcurve from photometric observations taken at the Center for Solar System Studies (CS3, U81) in California. [a] It gave an exceptionally long rotation period of 990±50 hours with a brightness amplitude of 0.55 magnitude ( U=2), which makes it one of the slowest rotators known to exist. It is also a suspected tumbling asteroid, which show a non-principal axis rotation. [6]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, 1999 FH measures 3.395 and 4.17 kilometers in diameter and its surface has an albedo of 0.287 and 0.176, respectively. [4] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 3.92 kilometers with an absolute magnitude of 14.4. [3]
This minor planet was numbered by the Minor Planet Center on 28 March 2002. [9] As of 2018, it has not been named. [2]