- Orbit and Relationship with the Kuiper Belt
- Moon
- Notes
- References
- External links
| minorplanet = yes
| name = {{mp|1999 OJ|4}}
| image = Orbit of 1999 OJ4.gif
| image_size = 270
| caption = Orbital diagram of {{mp|1999 OJ|4}}
| background = #C2E0FF
| discovery_ref = [1]
| discoverer =
| discovery_site = Mauna Kea Obs.
{{small|(first observed only)}}
| discovered = 18 July 1999
| mpc_name = {{mp|1999 OJ|4}}
| alt_names =
| pronounced =
| named_after =
| mp_category = {{nowrap|TNO {{·}}cubewano [3][4][5]}}
cold
| orbit_ref =
| epoch = 27 April 2019 (JD 2458600.5)
| uncertainty = 4
| observation_arc = 9.21 yr (3,363 d)
| aphelion = 39.013 AU
| perihelion = 37.200 AU
| semimajor = 38.107 AU
| eccentricity = 0.0238
| period = 235.24 yr (85,921 d)
| mean_anomaly = 294.62°
| mean_motion = {{Deg2DMS|0.0042|sup=ms}} / day
| inclination = 3.9954°
| asc_node = 127.44°
| arg_peri = 285.68°
| satellites = 1 {{small|(D: 72 km; P: 84.12 h)}}[7]
| dimensions = {{val|75}} km[3]
| rotation =
| albedo = 0.1 {{small|(assumed)}}[9]
0.225[3][11]
| spectral_type = B–V {{=}} 1.68[3][4]
V–R {{=}} 0.682[4]
| abs_magnitude = 7.1[1]
}}{{mp|1999 OJ|4}} is a trans-Neptunian object and binary system from the classical Kuiper belt, located in the outermost region of the Solar System. The bright cubewano belongs to the cold population and measures approximately {{convert|75|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was first observed at Mauna Kea Observatory on 18 July 1999. Discovered in 2005, its minor-planet moon is just 3 kilometres smaller than its primary and has an orbital period of 84 hours.[1][7]
Orbit and Relationship with the Kuiper Belt
{{mp|1999 OJ|4}} orbit characterizes it as a classical Kuiper Belt object, or cubewano. Due to its nearly circular orbit and low inclination, it is also in the "cold" population of cubewanos. As a result, it is likely reddish in color.[19][20]Moon
{{mp|1999 OJ|4}} has one moon, S/2005 ({{mp|1999 OJ|4}}) 1. This moon was discovered by the Hubble Space Telescope[11] on 5 October 2013. It orbits 3,267 kilometres away from 1999 OJ4, completing one orbit every 84.115 days.[7][11] At 72 km, it is nearly the same size as {{mp|1999 OJ|4}}. From the surface of 1999 OJ4, S/2005 (1999 OJ4) 1 would have an apparent diameter of roughly 8.11°,[1] over fourteen times the apparent size of the Sun from Earth.Notes
{{notelist}}References
1. ^Calculated by solving 
.
2. ^1 2 3 {{cite web |title = 1999 OJ4 |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1999+OJ4 |accessdate = 3 December 2018}}
3. ^1 2 3 4 {{cite web |title = List of Known Trans-Neptunian Objects |work = Johnston's Archive |date = 7 October 2018 |last = Johnston |first= Wm. Robert |url = http://www.johnstonsarchive.net/astro/tnoslist.html |accessdate = 3 December 2018}}
4. ^1 2 3 {{cite web |title = Asteroids with Satellites Database – 1999 OJ4 |work = Johnston's Archive |date = 20 September 2014 |last = Johnston |first= Wm. Robert |url = http://www.johnstonsarchive.net/astro/astmoons/am1999oj4.html |accessdate = 3 December 2018}}
5. ^1 2 3 {{cite web |title = Asteroid 1999 OJ4 |work = Small Bodies Data Ferret |url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1999+OJ4 |accessdate = 3 December 2018}}
6. ^1 {{cite web |title = LCDB Data for (1999+OJ4) |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1999+OJ4%7C |accessdate = 3 December 2018}}
7. ^1 2 3 {{cite journal | last1 = Grundy | first1 = W. M. | last2 = Noll | first2 = K. S. | last3 = Buie | first3 = M. W. | last4 = Beneccini | first4 = S. D. | last5 = Stephens | first5 = D. C. | last6 = Levison | first6 = H. F. | display-authors = 1 | date = 2009 | title = Mutual Orbits and Masses of Six Transneptunian Binaries | journal = Icarus | doi = 10.1016/j.icarus.2008.12.008 | arxiv = 0812.3126 | bibcode = 2009Icar..200..627G}}
8. ^1 {{cite journal | display-authors = 6 | author = A. Doressoundiram | author2 = N. Peixinho | author3 = C. de Bergh | author4 = S. Fornasier | author5 = P. Thebault | author6 = M. A. Barucci | author7 = C. Veillet | title = The Color Distribution in the Edgeworth-Kuiper Belt | journal = The Astronomical Journal | volume = 124 | date = October 2002 | arxiv = astro-ph/0206468 | bibcode = 2002AJ....124.2279D | doi = 10.1086/342447 | issue = 4 | pages = 2279}}
9. ^1 {{cite journal | author = Nuno Peixinho | author2 = Pedro Lacerda | author3 = David Jewitt | last-author-amp = yes | title = Color-inclination relation of the classical Kuiper belt objects | journal = The Astronomical Journal | volume = 136 | date = August 2008 | arxiv = 0808.3025 | bibcode = 2008AJ....136.1837P | doi = 10.1088/0004-6256/136/5/1837 | issue = 5 | pages = 1837}}
10. ^1 {{cite web |author = Marc W. Buie |author-link= Marc W. Buie |title = Orbit Fit and Astrometric record for 99OJ4 |publisher = SwRI (Space Science Department) |url = http://www.boulder.swri.edu/~buie/kbo/astrom/99OJ4.html |accessdate = 3 December 2018}}
[2][3][4][5][6][7][8][9][10].2. ^1 2 3 {{cite web |title = 1999 OJ4 |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1999+OJ4 |accessdate = 3 December 2018}}
3. ^1 2 3 4 {{cite web |title = List of Known Trans-Neptunian Objects |work = Johnston's Archive |date = 7 October 2018 |last = Johnston |first= Wm. Robert |url = http://www.johnstonsarchive.net/astro/tnoslist.html |accessdate = 3 December 2018}}
4. ^1 2 3 {{cite web |title = Asteroids with Satellites Database – 1999 OJ4 |work = Johnston's Archive |date = 20 September 2014 |last = Johnston |first= Wm. Robert |url = http://www.johnstonsarchive.net/astro/astmoons/am1999oj4.html |accessdate = 3 December 2018}}
5. ^1 2 3 {{cite web |title = Asteroid 1999 OJ4 |work = Small Bodies Data Ferret |url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1999+OJ4 |accessdate = 3 December 2018}}
6. ^1 {{cite web |title = LCDB Data for (1999+OJ4) |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1999+OJ4%7C |accessdate = 3 December 2018}}
7. ^1 2 3 {{cite journal | last1 = Grundy | first1 = W. M. | last2 = Noll | first2 = K. S. | last3 = Buie | first3 = M. W. | last4 = Beneccini | first4 = S. D. | last5 = Stephens | first5 = D. C. | last6 = Levison | first6 = H. F. | display-authors = 1 | date = 2009 | title = Mutual Orbits and Masses of Six Transneptunian Binaries | journal = Icarus | doi = 10.1016/j.icarus.2008.12.008 | arxiv = 0812.3126 | bibcode = 2009Icar..200..627G}}
8. ^1 {{cite journal | display-authors = 6 | author = A. Doressoundiram | author2 = N. Peixinho | author3 = C. de Bergh | author4 = S. Fornasier | author5 = P. Thebault | author6 = M. A. Barucci | author7 = C. Veillet | title = The Color Distribution in the Edgeworth-Kuiper Belt | journal = The Astronomical Journal | volume = 124 | date = October 2002 | arxiv = astro-ph/0206468 | bibcode = 2002AJ....124.2279D | doi = 10.1086/342447 | issue = 4 | pages = 2279}}
9. ^1 {{cite journal | author = Nuno Peixinho | author2 = Pedro Lacerda | author3 = David Jewitt | last-author-amp = yes | title = Color-inclination relation of the classical Kuiper belt objects | journal = The Astronomical Journal | volume = 136 | date = August 2008 | arxiv = 0808.3025 | bibcode = 2008AJ....136.1837P | doi = 10.1088/0004-6256/136/5/1837 | issue = 5 | pages = 1837}}
10. ^1 {{cite web |author = Marc W. Buie |author-link= Marc W. Buie |title = Orbit Fit and Astrometric record for 99OJ4 |publisher = SwRI (Space Science Department) |url = http://www.boulder.swri.edu/~buie/kbo/astrom/99OJ4.html |accessdate = 3 December 2018}}
}}
External links
- 1999 OJ4 – System parameters, Lowell Observatory
- [https://minorplanetcenter.net/iau/lists/TNOs.html List of Transneptunian Objects], Minor Planet Center
- List of binary asteroids/TNOs, Johnston's Archive
- Asteroid Lightcurve Database (LCDB), query form (info)
- {{AstDys|1999OJ4}}
- {{JPL small body|id=3031899}}
4 : Cold classical Kuiper belt objects|Minor planet object articles (unnumbered)|Binary trans-Neptunian objects|Astronomical objects discovered in 1999
- Wall and Hanover Building
- Wallan Football Club
- Wallangarra railway station, New South Wales
- Wallan Wallan
- Wall Arch
- Wallarobba railway station, New South Wales
- Wallaroo, New South Wales
- Wallas
- Wallas Eaton
- Wallasey Borough Council
- Wallasey Grove Road
- Wallasey Grove Road station
- Wallasey Memorial Unitarian Church
- Wallasey Village station
- Wall-attachment effect
- Wallau
- Wallau (Lahn)
- Wallawalla
- Walla Walla (AVA)
- Walla Walla City Center, Washington
- Walla Walla Community College
- Walla Walla (disambiguation)
- Walla Walla General Hospital
- Walla Walla High School
- Walla Walla, Illinois