Last updated 25 Jul 2021

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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 of the objects that have been discovered at Great Shefford. See also the Discovery Circumstances page of all numbered and unnumbered objects.

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.

Information on any known problems with this service is available.


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
Discovery circumstances (in order of discovery) can be found here.

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 25 Jul 2021 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.
06/03/2022 2015 TN23 09 03 +09.7 24.2 15 24/10/2019 3 1 Not necessary for numbering. 3 opps, 2002-2019, MPO 544622
30/04/2022 2016 VY11 10 14 +12.6 23.9 29 18/11/2016 1 6 Not necessary for numbering. 23-day arc, MPEC 2020-HD8
30/04/2022 2008 YT24 10 35 +10.8 23.8 34 27/10/2019 4 1 Not necessary for numbering. 4 opps, 2004-2019, MPO 543397
15/06/2022 2008 UE99 11 48 +00.9 23.9 55 31/01/2017 5 1 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2005-2017, MPO 409349
31/05/2022 2005 EE1 12 09 -11.1 22.5 64 08/04/2005 1 6 Not necessary for numbering. 37-day arc, MPEC 2020-M39
20/06/2022 2007 XS16 12 25 -00.5 23.5 64 23/01/2020 5 2 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 5 opps, 2003-2020, MPO 543261
10/07/2022 2007 YL2 13 25 -03.3 23.9 79 14/04/2021 6 1 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 6 opps, 2003-2021, MPO 623526
24/07/2022 2005 UA7 14 10 -14.9 22.7 93 17/05/2021 7 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 7 opps, 2001-2021, MPEC 2021-M88
12/10/2022 2011 SV25 16 06 -22.6 23.5 122 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 2009 CL6 = 2011 UK42 17 05 -33.4 21.9 135 24/03/2020 9 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 9 opps, 2007-2020, MPO 543738
04/11/2022 2012 CJ2 17 46 -22.6 22.5 144 16/03/2020 7 0 Useful for numbering. 7 opps, 2003-2020, MPO 543797
31/12/2022 2005 VW7 = 2013 RX43 20 15 -20.8 19.1 179 13/07/2021 9 0 Not necessary for orbit improvement. Not necessary this month for numbering. 9 opps, 2005-2021, MPEC 2021-NB8
26/07/2021 2008 WH2 20 18 -03.7 20.6 164 10/07/2021 5 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2008-2021, MPEC 2021-N95
03/08/2021 2005 UZ6 20 57 -05.1 21.2 163 04/07/2021 10 0 Useful for numbering. 10 opps, 2002-2021, MPEC 2021-N23
09/08/2021 2005 WN60 21 24 +01.4 22.5 153 13/07/2021 7 0 Not necessary this month for numbering. 7 opps, 2005-2021, MPEC 2021-NB8
23/08/2021 2004 PN2 22 22 -10.9 20.0 149 19/07/2021 10 0 Not necessary this month for numbering. 10 opps, 2004-2021, MPEC 2021-O29
26/08/2021 2006 GQ3 22 40 -07.2 22.1 143 21/05/2020 5 2 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 5 opps, 2006-2020, MPO 545668
16/09/2021 2009 HW58 = 2017 QA19 00 02 +04.3 22.2 120 17/05/2020 6 0 Not necessary for numbering. 6 opps, 2005-2020, MPO 546133
16/09/2021 2020 FD7 00 07 -21.2 22.3 127 18/04/2020 1 5 Not necessary for numbering. 24-day arc, MPEC 2020-HD8
20/09/2021 2012 FW1 00 12 +02.1 23.6 119 18/04/2012 1   Useful for numbering. 51-day arc, MPO 230289
24/10/2021 2013 YX35 01 42 +10.8 22.5 95 09/12/2017 2 3 Not necessary for numbering. 2 opps, 2013-2017, MPO 485660
05/11/2021 2010 TO5 01 58 +07.3 21.6 92 16/05/2020 9 0 Useful for numbering. 9 opps, 2003-2020, MPO 545788
29/10/2021 2012 HB12 02 23 -01.5 21.7 90 12/07/2020 10 0 Not necessary for orbit improvement. Not necessary for numbering. 10 opps, 2004-2020, MPO 554389
21/11/2021 2009 AO1 03 21 +25.9 22.9 68 23/08/2020 6 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 6 opps, 2009-2020, MPO 562179
21/11/2021 2009 TQ2 03 37 +18.3 21.4 66 14/08/2020 9 0 Not necessary for orbit improvement. Useful for numbering. 9 opps, 2002-2020, MPO 562217
22/11/2021 2007 EA183 03 40 +14.6 23.6 66 29/07/2019 5 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2007-2019, MPO 477579
18/12/2021 2007 XT16 04 28 +23.6 23.2 53 13/09/2020 6 0 Not necessary for numbering. 6 opps, 2007-2020, MPEC 2020-UQ6
22/12/2021 2009 AN1 04 34 +18.0 23.4 53 06/01/2009 1 E Useful for numbering. 4-day arc, MPO 151128
26/12/2021 2008 TR156 04 54 +32.9 22.2 47 05/11/2020 5 1 Not necessary for numbering. 5 opps, 2008-2020, MPEC 2020-V16
29/12/2021 2011 SP232 05 03 +21.9 22.0 46 08/11/2020 12 0 Not necessary for numbering. 12 opps, 1995-2020, MPEC 2020-V46
23/12/2021 2017 DH110 05 04 +13.7 23.5 47 27/02/2017 4 1 Not necessary for numbering. 4 opps, 2001-2017, MPO 492159
23/12/2021 2004 PO95 05 11 +39.1 23.8 45 26/08/2004 1   Useful for numbering. 16-day arc, MPO 104306
07/01/2022 2012 FX1 05 19 +21.4 24.0 42 10/04/2019 3 2 Useful for numbering. 3 opps, 2012-2019, MPEC 2021-M72
01/02/2022 2012 XH54 05 52 +25.3 22.2 34 30/08/2016 3 2 Not necessary for numbering. 3 opps, 2009-2016, MPEC 2021-M68
20/01/2022 2006 XY4 06 07 +25.6 22.5 31 13/11/2020 7 0 Not necessary for numbering. 7 opps, 1996-2020, MPEC 2020-VE3
19/01/2022 2007 RA12 06 12 +20.7 23.4 30 05/11/2020 8 0 Not necessary for numbering. 8 opps, 1994-2020, MPEC 2020-V16
05/02/2022 2012 RP9 06 29 +33.9 23.0 28 12/09/2020 4 2 Not necessary for numbering. 4 opps, 2008-2020, MPO 562384
03/02/2022 2009 VJ42 06 34 +17.5 22.9 25 16/10/2020 3 2 Not necessary for numbering. 3 opps, 2009-2020, MPEC 2020-U37
22/02/2022 2012 XL2 07 17 +23.7 22.7 15 12/12/2020 10 0 Not necessary for orbit improvement. Not necessary for numbering. 10 opps, 1995-2020, MPO 599402
23/02/2022 2007 XY17 07 31 +18.4 22.3 11 14/11/2020 3 1 Not necessary for numbering. 3 opps, 2007-2020, MPEC 2020-VF7
09/02/2022 2015 XV218 07 32 +09.8 23.1 15 09/12/2015 1   Useful for numbering. 5-day arc, MPO 392478
08/02/2022 2008 TG9 07 34 +15.7 22.3 11 10/12/2020 9 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 9 opps, 2003-2020, MPO 599101
14/02/2022 2016 QP45 07 42 +26.3 24.1 11 15/12/2020 2 0 Not necessary for numbering. 2 opps, 2016-2020, MPO 599984
25/02/2022 2005 WU57 08 18 +15.1 22.2 5 11/01/2021 5 2 Not necessary for numbering. 5 opps, 2005-2021, MPO 598928

 


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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