Last updated 10 Apr 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 07 May 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.
07/01/2022 2012 FX1 03 05 +14.6 23.7 3 10/04/2019 2 4 Useful for numbering. 2 opps, 2012-2019, MPO 517183
23/12/2021 2017 DH110 03 15 +10.1 23.4 8 27/02/2017 4 1 Not necessary for numbering. 4 opps, 2001-2017, MPO 492159
05/02/2022 2012 RP9 03 15 +27.1 22.5 11 12/09/2020 4 2 Not necessary for numbering. 4 opps, 2008-2020, MPO 562384
20/01/2022 2006 XY4 03 44 +20.4 22.2 12 13/11/2020 7 0 Not necessary for numbering. 7 opps, 1996-2020, MPEC 2020-VE3
03/02/2022 2009 VJ42 03 50 +18.1 22.6 13 16/10/2020 3 2 Not necessary for numbering. 3 opps, 2009-2020, MPEC 2020-U37
19/01/2022 2007 RA12 03 51 +17.9 23.1 13 05/11/2020 8 0 Not necessary for numbering. 8 opps, 1994-2020, MPEC 2020-V16
22/02/2022 2012 XL2 04 36 +23.1 22.7 24 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 04 38 +22.5 22.3 24 14/11/2020 3 1 Not necessary for numbering. 3 opps, 2007-2020, MPEC 2020-VF7
14/02/2022 2016 QP45 04 57 +27.8 23.8 30 15/12/2020 2 0 Not necessary for numbering. 2 opps, 2016-2020, MPO 599984
09/02/2022 2015 XV218 05 33 +14.3 23.2 37 09/12/2015 1   Useful for numbering. 5-day arc, MPO 392478
08/02/2022 2008 TG9 05 43 +18.2 22.5 39 10/12/2020 9 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 9 opps, 2003-2020, MPO 599101
25/02/2022 2005 WU57 06 16 +18.0 22.3 47 11/01/2021 5 2 Not necessary for numbering. 5 opps, 2005-2021, MPO 598928
06/03/2022 2015 TN23 07 32 +14.9 24.2 65 24/10/2019 3 1 Not necessary for numbering. 3 opps, 2002-2019, MPO 544622
30/04/2022 2016 VY11 08 05 +21.8 23.5 72 18/11/2016 1 6 Not necessary for numbering. 23-day arc, MPEC 2020-HD8
30/04/2022 2008 YT24 08 57 +20.5 23.5 84 27/10/2019 4 1 Not necessary for numbering. 4 opps, 2004-2019, MPO 543397
15/06/2022 2008 UE99 10 20 +09.8 23.0 106 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 11 17 -06.0 21.4 125 08/04/2005 1 6 Not necessary for numbering. 37-day arc, MPEC 2020-M39
20/06/2022 2007 XS16 11 44 +05.8 22.6 127 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 24 +01.3 22.9 151 14/04/2021 6 1 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 6 opps, 2003-2021, MPEC 2021-GL9
24/07/2022 2005 UA7 14 31 -12.9 21.3 172 04/05/2021 7 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary this month for numbering. 7 opps, 2001-2021, MPEC 2021-J79
03/06/2021 2011 SV25 17 06 -25.0 23.0 149 22/03/2020 6 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 6 opps, 2004-2020, MPO 543714
15/05/2021 2007 PL = 2012 PV22 15 50 -20.9 21.2 141 15/03/2021 13 0 Not necessary for orbit improvement. Useful for numbering. 13 opps, 2003-2021, MPEC 2021-F02
17/06/2021 2009 CL6 = 2011 UK42 18 13 -32.5 22.0 133 24/03/2020 9 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 9 opps, 2007-2020, MPO 543738
25/06/2021 2012 CJ2 18 45 -21.7 22.9 126 16/03/2020 7 0 Useful for numbering. 7 opps, 2003-2020, MPO 543797
25/07/2021 2005 VW7 = 2013 RX43 20 21 -25.5 21.3 105 02/01/2019 8 1 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 8 opps, 2005-2019, MPO 473284
26/07/2021 2008 WH2 20 37 -10.9 21.9 98 23/06/2020 4 0 Useful for orbit improvement (based on orbit uncertainty). Not necessary for numbering. 4 opps, 2008-2020, MPO 554211
03/08/2021 2005 UZ6 21 01 -09.9 22.6 92 17/05/2020 9 0 Not necessary for numbering. 9 opps, 2002-2020, MPO 545650
23/08/2021 2004 PN2 21 25 -13.0 21.3 87 25/05/2020 9 0 Not necessary for numbering. 9 opps, 2004-2020, MPO 545628
09/08/2021 2005 WN60 21 30 -03.7 23.4 84 22/06/2020 6 0 Not necessary for numbering. 6 opps, 2005-2020, MPO 554062
26/08/2021 2006 GQ3 22 08 -08.6 23.3 76 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 2020 FD7 22 56 -19.9 23.1 70 18/04/2020 1 5 Not necessary for numbering. 24-day arc, MPEC 2020-HD8
16/09/2021 2009 HW58 = 2017 QA19 22 58 -04.4 22.9 63 17/05/2020 6 0 Not necessary for numbering. 6 opps, 2005-2020, MPO 546133
20/09/2021 2012 FW1 23 10 -04.2 24.5 60 18/04/2012 1   Useful for numbering. 51-day arc, MPO 230289
05/11/2021 2010 TO5 23 33 -04.7 22.4 55 16/05/2020 9 0 Useful for numbering. 9 opps, 2003-2020, MPO 545788
24/10/2021 2013 YX35 23 49 -01.4 23.3 50 09/12/2017 2 3 Not necessary for numbering. 2 opps, 2013-2017, MPO 485660
29/10/2021 2012 HB12 00 38 -07.9 22.1 42 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 01 34 +15.4 23.1 20 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 01 57 +08.3 21.2 17 14/08/2020 9 0 Not necessary for orbit improvement. Useful for numbering. 9 opps, 2002-2020, MPO 562217
18/12/2021 2007 XT16 02 08 +14.8 22.9 12 13/09/2020 6 0 Not necessary for numbering. 6 opps, 2007-2020, MPEC 2020-UQ6
22/11/2021 2007 EA183 02 13 +08.7 23.5 14 29/07/2019 5 0 Useful for orbit improvement (based on orbit uncertainty). Useful for numbering. 5 opps, 2007-2019, MPO 477579
01/02/2022 2012 XH54 02 16 +17.4 21.7 10 30/08/2016 2 2 Not necessary for numbering. 2 opps, 2012-2016, MPO 543921
22/12/2021 2009 AN1 02 23 +10.7 23.3 10 06/01/2009 1 E Useful for numbering. 4-day arc, MPO 151128
26/12/2021 2008 TR156 02 39 +23.6 21.9 8 05/11/2020 5 1 Not necessary for numbering. 5 opps, 2008-2020, MPEC 2020-V16
29/12/2021 2011 SP232 02 45 +13.5 21.5 5 08/11/2020 12 0 Not necessary for numbering. 12 opps, 1995-2020, MPEC 2020-V46
23/12/2021 2004 PO95 02 51 +31.4 23.3 15 26/08/2004 1   Useful for numbering. 16-day arc, MPO 104306

 


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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