View source for 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 Stepanovich Chernykh|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 ([[Julian day|JD]] 2460600.5)
| observation_arc = 44.53 years
| obs             = 1,932
| perihelion      = 2.349 AU (A)<br>2.351 AU (B)
| aphelion        = 9.281 AU (A)<br>9.249 AU (B)
| semimajor       = 5.815 AU
| eccentricity    = 0.5962
| period          = 14.02 years (A)<br/>13.97 years (B)
| inclination     = 5.049°
| asc_node        = 116.14°
| arg_peri        = 277.93°
| mean            = 122.19°
| tjup            = 2.584 (A)<br>2.588 (B)
| Earth_moid      = 1.338 AU (A)<br>1.362 AU (B)
| Jupiter_moid    = 0.158 AU (A)<br>0.095 AU (B)
| physical_ref    = {{r|jpl1|jpl2}}
| dimensions      = {{cvt|5.6|km|mi}} (A)
| M1              = 13.7 (A)<br>13.0 (B)
| M2              = 
| magnitude       = 
| last_p          = 12 January 2020 (A)<br />31 January 2020 (B){{r|horizons-B}}
| next_p          = 10 January 2034 (A)<br/>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 [[Jet Propulsion Laboratory|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 [[Comet nucleus|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
! [[JPL Horizons On-Line Ephemeris System|Horizons]]<br/>difference
|-bgcolor=#c2c2c2
| 2005 || 1 day
|-bgcolor=#c2c2c2
| 2020 || 18 days
|-
| 2034 || 43 days
|}

== References ==
{{Reflist|refs=

<ref name="IAUC_3100">{{cite journal
| 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 }}
</ref>

<ref name="IAUC_5391">{{cite journal
| 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 }}
</ref>

<ref name="jpl1">{{cite web
| 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 }}
</ref>

<ref name="jpl2">{{cite web
| 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 }}
</ref>

<ref name="Kronk">{{cite web
| 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 }}
</ref>

<ref name=horizons-B>{{cite web
  |author=[[JPL Horizons On-Line Ephemeris System|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)</ref>

<ref name="Horizons2034-B">{{cite web
  |title=Horizons Batch for 101P/Chernykh-B (90000941) on 2034-Feb-21
  |publisher=[[JPL Horizons On-Line Ephemeris System|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)</ref>

<ref name="Horizons-B-20220121">{{cite web
  |title=101P-B @ epoch 2022-Jan-21
  |publisher=[[JPL Horizons On-Line Ephemeris System|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}}</ref>

<ref name="MPC">{{cite web
| 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 }}
</ref>

<ref name="MPC2">{{cite web
| 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 }}
</ref>

}}

== 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}}
[[Category:Periodic comets]]
[[Category:Numbered comets|0101]]
[[Category:Split comets|101P]]
[[Category:Comets in 2020|101P]]
[[Category:Astronomical objects discovered in 1977|19770819]]


{{comet-stub}}