Last updated 13 Jul 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 30 Jul 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.
18/04/2023 2009 AO1 08 42 +20.1 21.9 2 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 08 51 +18.3 22.7 3 31/01/2022 10 0 Useful for numbering. 10 opps, 2003-2022, MPO 686597
14/03/2023 2007 XT16 08 53 +16.8 23.5 4 05/01/2022 7 0 Useful for numbering. 7 opps, 2007-2022, MPEC 2022-A40
06/03/2023 2008 TR156 09 01 +24.0 22.7 8 01/12/2021 6 0 Useful for numbering. 6 opps, 2008-2021, MPEC 2021-XM3
17/04/2023 2017 DH110 09 08 +12.5 22.6 10 27/02/2017 4 1 Not necessary for numbering. 4 opps, 2001-2017, MPO 492159
31/03/2023 2011 SP232 09 27 +20.3 22.4 12 04/01/2022 13 0 Useful for numbering. 13 opps, 1995-2022, MPEC 2022-A23
16/04/2023 2007 RA12 09 59 +10.6 23.9 21 06/01/2022 9 0 Useful for numbering. 9 opps, 1994-2022, MPEC 2022-A65
04/04/2023 2012 RP9 10 24 +13.1 24.4 26 07/01/2022 5 0 Useful for numbering. 5 opps, 2008-2022, MPEC 2022-A85
08/04/2023 2012 XH54 10 28 +04.6 24.2 30 21/02/2022 5 0 Useful for numbering. 5 opps, 2009-2022, MPO 686843
30/03/2023 2016 QP45 10 30 +11.3 25.8 28 15/12/2020 2 0 Useful for numbering. 2 opps, 2016-2020, MPO 704099
29/04/2023 2008 TG9 10 37 +01.3 22.5 34 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 10 43 -10.0 23.5 42 09/12/2015 1   Useful for numbering. 5-day arc, MPO 392478
22/05/2023 2009 VJ42 10 48 -02.1 23.6 38 09/02/2022 6 0 Useful for numbering. 6 opps, 2009-2022, MPO 686519
06/08/2023 2012 FX1 10 50 +12.1 23.0 32 10/04/2019 3 2 Useful for numbering. 3 opps, 2012-2019, MPO 640306
24/04/2023 2005 WU57 11 11 +04.4 23.4 40 05/03/2022 6 0 Useful for numbering. 6 opps, 2005-2022, MPO 686204
08/05/2023 2007 XY17 11 20 -06.9 23.8 47 27/03/2022 5 0 Useful for numbering. 5 opps, 2007-2022, MPO 703285
24/05/2023 2012 XL2 11 26 +04.9 23.5 43 10/03/2022 11 0 Not necessary for orbit improvement. Useful for numbering. 11 opps, 1995-2022, MPO 686840
15/06/2023 2015 TN23 11 33 -07.2 24.1 50 24/10/2019 3 1 Not necessary for numbering. 3 opps, 2002-2019, MPO 544622
20/06/2023 2009 AN1 11 48 +04.6 23.6 48 02/03/2022 6 0 Useful for numbering. 6 opps, 2005-2022, MPO 676952
14/08/2023 2016 VY11 14 10 -11.3 23.9 87 18/11/2016 1 6 Not necessary for numbering. 23-day arc, MPEC 2020-HD8
17/09/2023 2008 YT24 14 10 -15.7 23.4 89 09/05/2022 5 0 Useful for numbering. 5 opps, 2004-2022, MPO 703348
30/07/2023 2005 EE1 15 56 -36.8 22.6 116 08/04/2005 1 6 Not necessary for numbering. 37-day arc, MPEC 2020-M39
11/10/2023 2008 UE99 16 57 -22.5 23.1 128 31/01/2017 5 1 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2005-2017, MPO 409349
07/02/2024 2007 YL2 18 49 -32.3 21.2 152 04/07/2022 7 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 7 opps, 2003-2022, MPEC 2022-N57
27/10/2023 2017 RB18 19 18 -12.2 20.7 160 04/06/2022 7 1 Useful for numbering. 7 opps, 2011-2022, MPEC 2022-L29
12/10/2022 2011 SV25 01 08 +08.2 22.3 108 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 02 16 +11.2 22.5 91 16/03/2020 7 0 Useful for numbering. 7 opps, 2003-2020, MPO 543797
04/11/2022 2009 CL6 = 2011 UK42 02 27 +13.8 22.3 88 24/03/2020 9 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 9 opps, 2007-2020, MPO 543738
29/11/2022 2020 FD7 04 12 +16.2 24.1 63 18/04/2020 1 5 Not necessary for numbering. 24-day arc, MPEC 2020-HD8
22/12/2022 2009 HW58 = 2017 QA19 04 58 +23.9 23.6 51 04/10/2021 8 0 Useful for numbering. 8 opps, 2005-2021, MPO 704224
04/01/2023 2008 WH2 05 03 +26.7 21.8 50 02/08/2021 5 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2008-2021, MPO 640108
02/02/2023 2012 FW1 05 56 +21.7 23.9 38 18/04/2012 1   Useful for numbering. 51-day arc, MPO 230289
27/01/2023 2009 TQ2 07 04 +31.6 22.1 25 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 07 20 +22.0 22.8 19 29/07/2019 5 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2007-2019, MPO 477579
07/02/2023 2004 PO95 08 11 +28.9 24.4 12 26/08/2004 1   Useful for numbering. 16-day arc, MPO 104306
17/03/2023 2013 YX35 08 21 +20.0 23.4 4 08/11/2021 6 0 Useful for numbering. 6 opps, 1996-2021, MPO 703671
22/03/2023 2009 AJ2 08 38 +13.8 22.0 5 27/12/2021 9 0 Useful for numbering. 9 opps, 2008-2021, MPEC 2021-Y59

 


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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