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Lightcurve Photometry
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The minor planets targeted during
routine follow-up of newly discovered Near-Earth Objects at Great
Shefford are mostly faint, many being too faint to be visible on
single images and are only revealed by adding (stacking) many images
together - see here. However, a
few are bright enough that individual exposures can provide accurate
brightness measurements and therefore, if a series of exposures are
taken, the brightness variations over a period of time can be measured
and used to determine how fast the minor planet is rotating and the
amplitude of the variations. Many Near-Earth objects are very small,
some only tens of metres in diameter or smaller and often are rotating
very fast. Listed below are light curves produced from
measurements of images taken at Great Shefford and many published in the
Minor Planet
Bulletin, the Bulletin of the Minor Planets Section of The
Association Of Lunar And Planetary Observers (ALPO). A Minor Planet
Center table relating absolute magnitude (H) to size is available (see
link in 'H' heading below). |
|
Name |
Lightcurve |
Observed |
Rot.
Period |
Ampl. |
H |
Publication |
|
143651 (2003 QO104) |
 |
2009 Apr 22 - 2009 May 22 |
113.3 h |
1.4 |
16.0 |
MPB Vol 36, No 4, p. 186-187 |
|
2000 RE52 = 2010 EK2 |
 |
2010 Mar |
4.9 h |
0.9 |
22.3 |
MPB Vol 45, No 2, p. 178-181 |
|
2008 YZ32 |
 |
2010 Jan |
5.8 min |
0.4 |
20.1 |
MPB Vol 45, No 2, p. 178-181 |
|
2009 EW |
 |
2009 Mar |
3.8 min |
1.5 |
26.4 |
MPB Vol 38, No 1, p. 36-39 |
|
2009 FH |
 |
2009 Mar 17 |
6.4 min |
0.3 |
26.6 |
MPB Vol 36, No 4, p. 186-187 |
|
2009 HM82 |
 |
2009 May 2-4 |
7.6 min |
0.9 |
22.6 |
MPB Vol 36, No 4, p. 186-187 |
|
2009 KW2 |
 |
2009 May 24-25 |
3.4 min |
0.7 |
26.6 |
MPB Vol 36, No 4, p. 186-187 |
|
2009 KL8 |
 |
2009 May 31 |
2.7 min |
0.8 |
24.3 |
MPB Vol 36, No 4, p. 186-187 |
|
2009 QH34 |
 |
2009 Aug |
2.1 min |
0.5 |
24.9 |
MPB Vol 38, No 1, p. 36-39 |
|
2009 UD |
 |
2009 Oct |
1.4 min |
0.7 |
27.2 |
MPB Vol 38, No 1, p. 36-39 |
|
2009 WV51 |
 |
2009 Nov |
4.6 min |
0.9 |
27.1 |
MPB Vol 38, No 1, p. 36-39 |
|
2010 EX11 |
 |
2010 Mar |
2.7 min |
0.3 |
24.1 |
MPB Vol 38, No 1, p. 36-39 |
|
2010 GF7 |
 |
2010 Apr |
1.9 min |
0.8 |
25.9 |
MPB Vol 38, No 1, p. 36-39 |
|
2010 TG19 |
 |
2010 Oct |
1.2 min |
1.1 |
23.9 |
MPB Vol 38, No 2, p. 104-107 |
|
2010 UJ7 |
 |
2010 Nov |
3.2 min |
0.9 |
25.4 |
MPB Vol 38, No 2, p. 104-107 |
|
2010 VK139 |
 |
2010 Nov |
1.8 min |
0.5 |
23.7 |
MPB Vol 38, No 2, p. 104-107 |
|
2010 XE11 |
 |
2010 Dec |
1.6 min |
0.5 |
23.0 |
MPB Vol 38, No 2, p. 104-107 |
|
2010 XM56 |
 |
2010 Dec |
2.35 h |
4.4 |
25.1 |
MPB Vol 38, No 2, p. 104-107 |
|
2012 XE54 |
 |
2012 Dec |
1.7 min |
0.3 |
25.4 |
MPB Vol 45, No 3, p. 215-219 |
|
2016 VA |
 |
2016 Nov |
- |
- |
27.6 |
MPB Vol 45, No 3, p. 215-219 |
|
2017 UK8 |
 |
2017 Oct |
31 sec |
1.3 |
28.2 |
MPB Vol 45, No 2, p. 178-181 |
|
2017 VD |
 |
2017 Nov |
8.0 h |
0.9 |
20.8 |
MPB Vol 45, No 2, p. 178-181 |
|
2018 CB |
 |
2018 Feb |
5.4 min |
0.2+ |
25.9 |
MPB Vol 48, No 1, p. 26-29 (link to full MPB issue) |
|
2018 GE3 |
 |
2018 Apr |
18.2 min |
0.9 |
23.8 |
MPB Vol 48, No 1, p. 26-29 (link to full MPB issue) |
|
2018 KF1 |
 |
2018 May |
1.9 min |
1.3 |
25.8 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 GF2 |
 |
2020 Apr |
1.1 min |
0.8 |
26.0 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 KK7 |
 |
2020 May - Jun |
46 sec |
1.4 |
26.3 |
MPB Vol 48, No 1, p. 26-29 (link to full MPB issue) |
|
2020 OH3 |
 |
2020 Jul |
23.5 min |
1.0 |
24.6 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 RA6 |
 |
2020 Sep |
20.5 min |
2.1 |
26.0 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 RZ6 |
 |
2020 Sep |
32 sec |
1.2 |
26.5 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 SW |
 |
2020 Sep |
28 sec |
0.7 |
29.1 |
MPB Vol 48, No 1, p. 26-29 (link to full MPB issue) |
|
2020 TP1 |
 |
2020 Oct |
25 min |
0.8 |
26.8 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 TD8 |
 |
2020 Oct |
30 sec |
0.9 |
26.9 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 TB12 |
 |
2021 Feb |
38 min |
2.2 |
22.2 |
(submitted to the MPB) |
|
2020 UQ6 |
 |
2020 Oct |
2.7 min |
0.7 |
22.6 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 VZ6 |
 |
2020 Dec |
5.9 min |
0.8 |
25.1 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 XX3 |
 |
2020 Dec |
2.3 min |
1.0 |
28.5 |
MPB Vol 48, No 2, p. 180-186 (link to full MPB issue) |
|
2020 YE5 |
 |
2021 Jan |
1.1 h |
0.1 |
25.8 |
(submitted to the MPB) |
|
2021 AU |
 |
2021 Jan |
1.6 h |
0.5 |
24.4 |
(submitted to the MPB) |
|
2021 CO |
 |
2021 Feb |
1.6 h |
0.3 |
25.3 |
(submitted to the MPB) |
|
2021 DP |
 |
2021 Feb |
6.8 min (P1) |
0.8 |
26.6 |
(submitted to the MPB) |
|
2021 DP |
 |
2021 Feb |
7.7 min (P2) |
0.6 |
26.6 |
(submitted to the MPB) |
|
2021 DX1 |
 |
2021 Feb |
1.8 h (P1) |
1.1 |
23.0 |
(submitted to the MPB) |
|
2021 DX1 |
 |
2021 Feb |
1.2 h (P2) |
0.5 |
23.0 |
(submitted to the MPB) |
|
2021 EB1 |
 |
2021 Mar |
3.6 min |
0.7 |
23.5 |
(submitted to the MPB) |
|
2021 EX1 |
 |
2021 Mar |
6.8 min |
0.3 |
24.9 |
(submitted to the MPB) |
|
2021 FH |
 |
2021 Mar |
1.1 min |
0.2 |
26.7 |
(submitted to the MPB) |
|
2020 SO = 1966-084B? 1966 Surveyor 2 Centaur rocket body? |
 |
2020 Dec |
9.4 sec |
3.1 |
|
Minor Planet Mailing
List #36025 |
|
2010-050B Chang'e 2 rocket body |
 |
2010 Nov |
26.9 sec |
3.3 |
|
Minor Planet Mailing
List #33260 |
|
2020-052B Mars 2020 Atlas 5 Centaur rocket body |
 |
2020 Jul |
28.6 sec |
2.2 |
|
Minor Planet Mailing
List #35725 |
|
