Last updated 17 Apr 2022

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Ephemerides and observability details for unnumbered Great Shefford Observatory Minor Planet potential discoveries

This page links directly to the Minor Planet Center's Ephemeris Service to provide up to date positions of all the objects listed below, to aid observers in getting astrometric positions. These are unnumbered objects that have been given provisional designations following observations from Great Shefford. Some of these objects may eventually be attributed as discoveries from Great Shefford, see Possible candidates for discovery credit (new rules).

See also the Discovery Circumstances page of all numbered and unnumbered objects found from Great Shefford.

Other observers also have their own follow-up pages, check out this list of links.

A PDF document describing the use of the MPES is available. Status information on MPC services is available here.


Astrometric observations of any of the following objects should be sent directly to obs@cfa.harvard.edu. Updated orbits will be available automatically through this page.

Display ephemerides or summary

Objects are listed in order of increasing distance east of the Sun (i.e. from evening sky objects through to morning objects) and currently observable objects (near opposition) will generally be found near the middle of the listing.

Information compiled 11 May 2022 from MPC MPES Ephemeris Summary and 1-line orbital elements. Opposition dates, RA, Decl., Magnitudes and Elongations are approximate.

Opp. Date Object RA Decl. Mag. Elong. Last Observed No. of opps U Further Observations? Orbit
Rows in Green denote objects in need of observation, with elongations of 90 or more and mag +21.5 or brighter and observed within the last month and useful for orbit improvement or numbering.
Rows in Red denote objects in need of observation, with elongations of 90 or more and mag +21.5 or brighter but not observed within the last month and useful for orbit improvement or numbering.
02/02/2023 2012 FW1 03 15 +16.7 23.6 1 18/04/2012 1   Useful for numbering. 51-day arc, MPO 230289
27/01/2023 2009 TQ2 05 03 +30.3 22.0 28 23/03/2022 10 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 10 opps, 2002-2022, MPO 686507
23/02/2023 2007 EA183 05 06 +21.5 23.0 27 29/07/2019 5 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2007-2019, MPO 477579
17/03/2023 2013 YX35 05 30 +24.0 23.6 33 08/11/2021 6 0 Useful for numbering. 6 opps, 1996-2021, MPEC 2022-J17
18/04/2023 2009 AO1 05 53 +27.8 22.6 38 04/01/2022 7 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 7 opps, 2009-2022, MPEC 2022-A23
27/03/2023 2010 TO5 06 07 +22.8 22.9 41 31/01/2022 10 0 Useful for numbering. 10 opps, 2003-2022, MPO 686597
07/02/2023 2004 PO95 06 30 +34.7 24.5 47 26/08/2004 1   Useful for numbering. 16-day arc, MPO 104306
22/03/2023 2009 AJ2 06 32 +20.8 22.5 47 27/12/2021 9 0 Useful for numbering. 9 opps, 2008-2021, MPEC 2021-Y59
14/03/2023 2007 XT16 06 46 +22.8 23.8 50 05/01/2022 7 0 Useful for numbering. 7 opps, 2007-2022, MPEC 2022-A40
17/04/2023 2017 DH110 06 55 +16.0 22.9 53 27/02/2017 4 1 Not necessary for numbering. 4 opps, 2001-2017, MPO 492159
06/03/2023 2008 TR156 07 05 +32.1 22.9 54 01/12/2021 6 0 Useful for numbering. 6 opps, 2008-2021, MPEC 2021-XM3
31/03/2023 2011 SP232 07 20 +27.3 22.5 57 04/01/2022 13 0 Useful for numbering. 13 opps, 1995-2022, MPEC 2022-A23
06/08/2023 2012 FX1 08 04 +25.4 23.1 67 10/04/2019 3 2 Useful for numbering. 3 opps, 2012-2019, MPO 640306
16/04/2023 2007 RA12 08 12 +17.3 23.8 71 06/01/2022 9 0 Useful for numbering. 9 opps, 1994-2022, MPEC 2022-A65
08/04/2023 2012 XH54 08 54 +11.9 23.7 82 21/02/2022 5 0 Useful for numbering. 5 opps, 2009-2022, MPO 686843
04/04/2023 2012 RP9 08 56 +24.3 24.1 79 07/01/2022 5 0 Useful for numbering. 5 opps, 2008-2022, MPEC 2022-A85
22/05/2023 2009 VJ42 09 01 +02.3 23.2 87 09/02/2022 6 0 Useful for numbering. 6 opps, 2009-2022, MPO 686519
29/04/2023 2008 TG9 09 12 +06.1 22.3 88 10/02/2022 10 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 10 opps, 2003-2022, MPO 686413
04/05/2023 2015 XV218 09 15 -08.8 23.1 93 09/12/2015 1   Useful for numbering. 5-day arc, MPO 392478
30/03/2023 2016 QP45 09 21 +19.0 25.2 86 15/12/2020 2 0 Not necessary for numbering. 2 opps, 2016-2020, MPO 599984
20/06/2023 2009 AN1 09 50 +16.3 22.8 94 02/03/2022 6 0 Useful for numbering. 6 opps, 2005-2022, MPO 676952
24/05/2023 2012 XL2 10 00 +14.3 23.0 96 10/03/2022 11 0 Not necessary for orbit improvement. Useful for numbering. 11 opps, 1995-2022, MPO 686840
08/05/2023 2007 XY17 10 03 -03.5 23.1 103 27/03/2022 5 0 Useful for numbering. 5 opps, 2007-2022, MPEC 2022-FB2
24/04/2023 2005 WU57 10 07 +09.1 22.9 100 05/03/2022 6 0 Useful for numbering. 6 opps, 2005-2022, MPO 686204
15/06/2023 2015 TN23 10 32 -05.2 23.6 111 24/10/2019 3 1 Not necessary for numbering. 3 opps, 2002-2019, MPO 544622
14/08/2023 2016 VY11 14 14 -10.3 22.6 164 18/11/2016 1 6 Not necessary for numbering. 23-day arc, MPEC 2020-HD8
17/09/2023 2008 YT24 14 15 -15.8 22.1 166 09/05/2022 5 0 Not necessary this month for numbering. 5 opps, 2004-2022, MPEC 2022-J80
31/05/2022 2005 EE1 16 49 -41.2 22.0 149 08/04/2005 1 6 Not necessary for numbering. 37-day arc, MPEC 2020-M39
15/06/2022 2008 UE99 17 58 -23.4 22.9 141 31/01/2017 5 1 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2005-2017, MPO 409349
10/07/2022 2007 YL2 19 38 -25.1 22.5 118 14/04/2021 6 1 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 6 opps, 2003-2021, MPO 623526
14/07/2022 2017 RB18 19 54 -16.2 21.7 113 17/04/2021 6 0 Useful for numbering. 6 opps, 2011-2021, MPO 624109
12/10/2022 2011 SV25 23 20 -04.2 23.5 61 22/03/2020 6 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 6 opps, 2004-2020, MPO 543714
04/11/2022 2012 CJ2 00 13 00.0 23.2 48 16/03/2020 7 0 Useful for numbering. 7 opps, 2003-2020, MPO 543797
04/11/2022 2009 CL6 = 2011 UK42 00 28 00.0 22.9 44 24/03/2020 9 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 9 opps, 2007-2020, MPO 543738
04/01/2023 2008 WH2 02 07 +20.1 21.6 16 02/08/2021 5 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2008-2021, MPO 640108
29/11/2022 2020 FD7 02 30 +08.2 23.9 14 18/04/2020 1 5 Not necessary for numbering. 24-day arc, MPEC 2020-HD8
22/12/2022 2009 HW58 = 2017 QA19 02 49 +17.8 23.2 6 04/10/2021 8 0 Useful for numbering. 8 opps, 2005-2021, MPEC 2022-H14

 


Options:

By default, ephemerides are topocentric for Great Shefford, begin now and are for 12 hours at 1 hour intervals and suppress output when the object is unobservable.

Start date for ephemerides: Number of dates to output

Ephemeris interval: Ephemeris units: days hours minutes seconds

For daily ephemerides, enter desired offset from 0h UT: hours

Observatory code:

Display positions in: truncated sexagesimal or full sexagesimal or decimal units

Display motions as: "/sec "/min "/hr °/day

Total motion and direction Separate R.A. and Decl. sky motions Separate R.A. and Decl. coordinate motions

Suppress output if sun above local horizon

Suppress output if object below local horizon

Generate perturbed ephemerides for unperturbed orbits

Measure azimuths:

westwards from the south meridian

eastwards from the north meridian

Also display elements for epoch

Format for elements output:

none MPC 1-line MPC 8-line
SkyMap (SkyMap Software) Guide (Project Pluto) xephem (E. Downey)
Home Planet (J. Walker) MyStars! (Relative Data Products) TheSky (Software Bisque)
Starry Night (Sienna Software) Deep Space (D. S. Chandler) PC-TCS (D. Harvey)
Earth Centered Universe (Nova Astronomics) Dance of the Planets (ARC) MegaStar V4.x (E.L.B. Software)
SkyChart 2000.0 (Southern Stars Software) Voyager II (Carina Software) SkyTools (CapellaSoft)
Autostar (Meade Instruments)

If you select 8-line MPC format, you may display the residual block for the objects selected:

Show residuals blocks. Show only residual lines containing observations from code . If you select 8-line MPC format the elements will be displayed with the ephemerides. If you select any format other than 8-line MPC format, only the elements are returned. In such cases your browser should download the elements file and save it to your local disk.


Supplementary Information

Summary
The summary lists the current J2000.0 coordinates, visual magnitude and solar elongation of the selected minor planets, as well as information on the date of last observation (where available), forthcoming opposition data and details on the latest published orbit. The opposition data lists the date of the next opposition and the declination and visual magnitude at that time.

Formats
The list of available formats for the orbital elements was correct at the time this document was prepared. It is possible that the Minor Planet Center now supports futher formats. If you select the summary option, any newly supported formats will be listed.

Elements
The elements supplied are the latest published elements for the specified objects. Elements will be found even if the designation you enter is a non-principal designation in an identification or if the object has been numbered.

Ephemerides can be supplied for objects with only Väisälä elements, but the elements themselves are not supplied.

Ephemerides
The ephemerides supplied for minor planets and comets are perturbed (if the orbits were computed with perturbations) and can be generated over the time period 1900 to 2040. Objects with unperturbed orbit solutions will return unperturbed ephemerides. Objects must be identified in images by their motion, not by their apparent closeness to a predicted position.

The time-scale of the supplied ephemerides is UTC.

If you desire a topocentric ephemeris, enter your observatory code in the appropriate box. When local circumstances are displayed, the azimuths are reckoned westwards from the south meridian.

As an aide-mémoire, the packed form of the object's designation (as used on the astrometric observation record) is displayed immediately above the ephemeris.


This service utilises the Minor Planet Ephemeris Service, courtesy of the IAU's Minor Planet Center. It has been made possible by Process Software Corporation, and their excellent VMS Web server, Purveyor.

The calculations will be performed on the Tamkin Foundation Computing Network.


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