101P/Chernykh
{{Short description|Periodic comet}}
{{use dmy dates|date=April 2025}}
{{Infobox comet
| name = 101P/Chernykh
| image= 101P-A 2020-02-02 image ZTF-sso-449-zr-size-5.6arcmin.png
| caption = Fragment A of 101P/Chernykh imaged from the Zwicky Transient Facility on 2 February 2020
| discovery_ref = {{r|IAUC_3100}}
| discoverer = Nikolai S. Chernykh
| discovery_site = Crimean Astrophysical Observatory
| discovery_date = 19 August 1977
| mpc_name = P/1977 Q1, P/1991 L1
| designations = {{unbulleted|1978 IV, 1992 II|1977l, 1991o}}
| orbit_ref = {{r|MPC|jpl1|jpl2}}
| epoch = 17 October 2024 (JD 2460600.5)
| observation_arc = 44.53 years
| obs = 1,932
| perihelion = 2.349 AU (A)
2.351 AU (B)
| aphelion = 9.281 AU (A)
9.249 AU (B)
| semimajor = 5.815 AU
| eccentricity = 0.5962
| period = 14.02 years (A)
13.97 years (B)
| inclination = 5.049°
| asc_node = 116.14°
| arg_peri = 277.93°
| mean = 122.19°
| tjup = 2.584 (A)
2.588 (B)
| Earth_moid = 1.338 AU (A)
1.362 AU (B)
| Jupiter_moid = 0.158 AU (A)
0.095 AU (B)
| physical_ref = {{r|jpl1|jpl2}}
| dimensions = {{cvt|5.6|km|mi}} (A)
| M1 = 13.7 (A)
13.0 (B)
| M2 =
| magnitude =
| last_p = 12 January 2020 (A)
31 January 2020 (B){{r|horizons-B}}
| next_p = 10 January 2034 (A)
21 February 2034 (B){{r|Horizons2034-B}}
}}
101P/Chernykh{{r|MPC2}} is a periodic comet which was first discovered on 19 August 1977, by Nikolaj Stepanovich Chernykh.{{r|IAUC_3100|Kronk}} It will next come to perihelion (closest approach to the Sun) in 2034.
In April 1991, the comet was observed to split in two. Zdenek Sekanina, from JPL, concluded that the comet split at a distance of {{convert|3.3|AU|e6km|abbr=unit}} from the Sun.{{r|IAUC_5391}}
The primary nucleus is {{convert|5.6|km|abbr=on}} in diameter and was last observed in 2022.{{r|jpl1}} Fragment B has not been observed since 2006.{{r|jpl2}} As of epoch 2022, fragment B takes 21 days longer to orbit the Sun.{{r|Horizons-B-20220121}}
| class="wikitable" style="text-align:center; font-size: 0.9em;"
|+Difference in perihelion date for fragment A+B ! Year ! Horizons | |
| bgcolor=#c2c2c2
| 2005 | 1 day |
| bgcolor=#c2c2c2
| 2020 | 18 days |
| 2034 | 43 days |
References
{{Reflist|refs=
| author1= B. G. Marsden
| title= Possible Comet
| url= http://www.cbat.eps.harvard.edu/iauc/03100/03100.html
| journal= IAU Circular
| volume= 3100
| date= 29 August 1977
| access-date= 22 March 2025 }}
| author1= D. W. Green
| title= Periodic Comet Chernykh (1991o)
| url= http://www.cbat.eps.harvard.edu/iauc/05300/05391.html
| journal= IAU Circular
| volume= 5391
| date= 21 November 1991
| access-date= 25 October 2008 }}
| title= 101P/Chernykh – JPL Small-Body Database Lookup
| url= https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?des=101P
| website= ssd.jpl.nasa.gov
| publisher= Jet Propulsion Laboratory
| access-date= 25 October 2008 }}
| title= 101P/Chernykh-B – JPL Small-Body Database Lookup
| url= https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?des=101P-B
| website= ssd.jpl.nasa.gov
| publisher= Jet Propulsion Laboratory
| access-date= 3 July 2020 }}
| author1= G. W. Kronk
| title= 101P/Chernykh
| url= https://cometography.com/pcomets/101p.html
| website= Cometography.com
| access-date= 9 November 2010
| archive-date= 27 October 2010
| archive-url= https://web.archive.org/web/20101027180709/http://cometography.com/pcomets/101p.html
| url-status= live }}
|author=Horizons output
|url=https://ssd.jpl.nasa.gov/api/horizons.api?format=text&COMMAND=%27DES%3D101P-B%3BCAP%27&START_TIME=%272020-Jan-20%27&STOP_TIME=%272020-Feb-10%27&STEP_SIZE=%273%20hours%27&QUANTITIES=%2719%27
|title=Observer Table for Comet 101P/Chernykh-B
|access-date=2020-07-03}} (Observer Location:@sun)
|title=Horizons Batch for 101P/Chernykh-B (90000941) on 2034-Feb-21
|publisher=JPL Horizons
|type=last obs: 2006-03-19
|url=https://ssd.jpl.nasa.gov/api/horizons.api?format=text&COMMAND=%27DES%3D101P-B%3BCAP%27&START_TIME=%272034-Feb-17%27&STOP_TIME=%272034-Feb-28%27&STEP_SIZE=%272%20hours%27&QUANTITIES=%2719%27
|archive-url=https://web.archive.org/web/20230706220552/https://ssd.jpl.nasa.gov/api/horizons.api?format=text&COMMAND=%27DES%3D101P-B%3BCAP%27&START_TIME=%272034-Feb-17%27&STOP_TIME=%272034-Feb-28%27&STEP_SIZE=%272%20hours%27&QUANTITIES=%2719%27
|archive-date=2023-07-06
|url-status=live
|accessdate=2022-07-06}} (JPL#5 Soln.date: 2017-Jun-08)
|title=101P-B @ epoch 2022-Jan-21
|publisher=JPL Horizons
|url=https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%27101P-B%27&TABLE_TYPE=%27ELEMENTS%27&START_TIME=%272022-Jan-21%27&STOP_TIME=%272022-Jan-22%27&STEP_SIZE=%271%20months%27&CENTER=%27@Sun%27&OUT_UNITS=%27AU-D%27
|accessdate=2023-07-08}}
| title= 101P/Chernykh Orbit
| url= http://www.minorplanetcenter.net/db_search/show_object?object_id=101P
| publisher= Minor Planet Center
| access-date= 22 March 2025 }}
| title= Periodic Comet Numbers
| url= http://www.minorplanetcenter.org/iau/lists/PeriodicCodes.html
| publisher= Minor Planet Center
| access-date= 7 November 2010
| archive-date= 6 November 2010
| archive-url= https://archive.today/20101106015203/http://www.minorplanetcenter.org/iau/lists/PeriodicCodes.html
| url-status= live }}
}}
External links
- [http://www.aerith.net/comet/catalog/0101P/index.html 101P/Chernykh] – Seiichi Yoshida @ aerith.net
- [http://cometography.com/pcomets/101p.html 101P at Gary W. Kronk's Cometography]
- {{JPL small body|title=101P/Chernykh|id=1000011}}
; For 101P/Chernykh-B:
- {{JPL small body|name=101P/Chernykh-B|id=1002320}}
{{PeriodicComets Navigator|100P/Hartley|102P/Shoemaker}}
{{Comets}}
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{{DEFAULTSORT:Chernykh, 101P}}
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