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"I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road."
- Steven Hawking

  
Minor Planet Discovery

Size and Shape of Minor Planets

Variable Star Measurements


   Quick Links

 
Minor Planet Lightcurve Data (data collected by ASLC member, Frederick Pilcher
)

Frederick PilcherASLC member Frederick Pilcher built and equipped the Organ Mesa Observatory in the first half of 2007 about 5 miles southeast of Las Cruces, New Mexcio, USA. This facility is dedicated to asteroid lightcurve research. The observatory itself is of sliding roof design with an adjacent climate controlled office in which the control computer is housed. Equipment consists of a Meade 14" LX200 GPS Schmidt-Cassegrain telescope, SBIG STL-1001E CCD with 1024x1024 pixels of size 24.7 micrometers and a field of 25x25 arcminutes, and Optec TCF-S temperature controlled focuser. Telescope and CCD control are by MPO Connections, and image measurement and lightcurve analysis are by MPO Canopus. Both programs are copyrighted by Brian D. Warner. MPO Canopus also constructs data files which permit the easy exchange of data with other observers for collaborative projects.

Fred's intention is to obtain accurate lightcurve parameters for asteroids for which no previous period determinations have been made, or for which the existing data are insufficient to obtain secure periods. Asteroids with secure periods are also observed to contribute toward spin/shape determinations.13 Egaria

Observations are ordinarily begun several weeks before opposition and continued for one to two months or longer with the specific goal of obtaining a secure period with very small rms error, full multiple lightcurve coverage, and if possible eliminating all aliases. The long time interval covered for most targets aids in achieving these goals.

Collaboration with other observers is sought, especially for asteroids whose rotation periods are nearly commensurable with Earth's and for which gaps in the lightcurve are unavoidable for observations at a single location. Fred also invites correspondence with all people interested in asteroid CCD photometry and lightcurve analysis. Please address your e-mail to: fpilcher35@gmail.com.

The author thanks the following collaborators, listed alphabetically, for sharing data that enhanced the lightcurves and improved the accuracy and reliability of the derived period.

Ashok Aggarwal minor planet (163), 2014
Gary Ahrendts minor planets (180), 2011; (247), 2012
Michael Alkema minor planet (227), 2013/14
Eduardo Alvarez minor planets (273), 2012; (299), 2014; (457), 2014; (473), 2014; (870), 2013
Ronald Baker minor planet (1188), 2011
Tim Barker minor planets (180), 2011; (247), 2012
Vladimir Benishek minor planets (49), 2015; (168), 2007/08; (178), 2008; (180), 2011; (182), 2008; (248), 2014; (266), 2010; (280), 2010/11; (285), 2009; (634), 2008; (780), 2009; (805), 2008; (833), 2015; (989), 2013; (1220), 2014/15; (2020), 2015; (2375), 2010; (57868), 2015
John Briggs minor planets (163), 2014; (5143), 2011
James Brinsfield minor planets (168), 2007/08; (531), 2011
Shelby Delos minor planets (180), 2011; (247), 2012
Russell Durkee minor planet (668), 2011
Andrea Ferrero minor planets (203), 2011/12; (273), 2012; (280), 2010/11; (482), 2012; (582), 2013; (612), 2012; (801), 2012; (870), 2013; (978), 2014; (1110), 2014
Lorenzo Franco minor planets (185), 2014; (641), 2014; (682), 2013; (1220), 2014/15; (5143), 2011
Hiromi and Hiroko Hamanowa minor planets (180), 2011; (203), 2011/12; (280), 2010/11
Jesse Hanowell minor planet (1110), 2014; (1220), 2014/15
David Higgins minor planets (103), 2010; (161), 2008; (180), 2011
Kevin Hills minor planet (248), 2014
Raguli Inasaridze minor planets (273), 2012; (801), 2012
Daniel Klinglesmith minor planets (49), 2015; (870), 2013; (1110), 2014; (1188), 2011; (1220), 2014/15; (5143), 2011
Richard Krajewski minor planet (182), 2008
Yurij Krugly minor planets (273), 2012; (801), 2012
Anna Marciniak minor planets (70), 2015/16; (219), 2014; (279), 2014/15; (329), 2013; (806), 2013
Luis Martinez minor planets (198), 2011/12; (318), 2015; (335), 2015; (641), 2013; (668), 2011; (827), 2012; (989), 2013
Caroline Odden minor planets (163), 2014; (1220), 2014/15
Julian Oey minor planets (178), 2008; (273), 2012; (310), 2010; (482), 2012; (582), 2013; (801), 2012; (870), 2013
John Ruthroff minor planet (185), 2011; (185), 2014
Robert Stephens minor planets (65), 2009; (169), 2009; (280), 2010/11
Luca Pietro Strabla minor planets (273), 2012; (308), 2014; (560), 2013; (561), 2012; (621), 2012; (801), 2012
Angela Vargas minor planet (870), 2013
Brian D. Warner minor planet (582), 2013

To view lightcurve data for a particular minor planet, please click on the asteroid's name below.


Asteroid

8 Flora
11 Parthenope
11 Parthenope
12 Victoria
13 Egeria
13 Egeria
14 Irene
14 Irene
18 Melpomene
18 Melpomene
23 Thalia
24 Themis
24 Themis
25 Phocaea
25 Phocaea
25 Phocaea
26 Proserpina
26 Proserpina
26 Proserpina
27 Euterpe
28 Bellona
28 Bellona
31 Euphrosyne
31 Euphrosyne
31 Euphrosyne
33 Polyhymnia
33 Polyhymnia
33 Polyhymnia
34 Circe
35 Leukothea
35 Leukothea
35 Leukothea
38 Leda
38 Leda
38 Leda
38 Leda
40 Harmonia
40 Harmonia
46 Hestia
47 Aglaja
49 Pales
50 Virginia
53 Kalypso
53 Kalypso
56 Melete
59 Elpis
65 Cybele
65 Cybele
65 Cybele
67 Asia
68 Leto
70 Panopaea
71 Niobe
74 Galatea
74 Galatea
80 Sapho
81 Terpsichore
81 Terpsichore
84 Klio
90 Antiope
98 Ianthe
99 Dike
102 Miriam
102 Miriam
103 Hera
105 Artemis
108 Hecuba
108 Hecuba
111 Ate
111 Ate
112 Iphigenia
120 Lachesis
122 Gerda
123 Brunhild
126 Velleda
128 Nemesis
131 Vala
131 Vala
134 Sophrosyne
137 Meliboea
140 Siwa
140 Siwa
143 Adria
145 Adeona
149 Medusa
150 Nuwa
154 Bertha
155 Scylla
157 Dejanira
159 Aemilia
161 Athor
161 Athor
161 Athor
163 Erigone
168 Sibylla
169 Zelia
177 Irma
177 Irma
178 Belisana
180 Garumna
182 Elsa
185 Eunike
185 Eunike
186 Celuta
189 Phthia
191 Kolga
194 Prokne
194 Prokne
198 Ampella
200 Dynamene
202 Chryseis
203 Pompeja
204 Kallisto
205 Martha
207 Hedda
215 Oenone
215 Oenone
217 Eudora
217 Eudora
217 Eudora
219 Thusnelda
221 Eos
223 Rosa
224 Oceana
225 Henrietta
226 Weringia
227 Philosophia
231 Vindobona
232 Russia
232 Russia
234 Barbara
236 Honoria
247 Eukrate
248 Lameia
249 Ilse
252 Clementina
254 Augusta
255 Oppavia
262 Valda
264 Libussa
266 Aline
266 Aline
269 Justitia
271 Penthesilea
272 Antonia
273 Atropos
274 Philagoria
275 Sapientia
275 Sapientia
279 Thule
280 Philia
285 Regina
290 Bruna
294 Felicia
296 Phaetusa
299 Thora
308 Polyxo
309 Fraternitas
310 Margarita
314 Rosalia
318 Magdalena
329 Svea
331 Etheridgea
335 Roberta
346 Hermentaria
419 Aurelia
419 Aurelia
419 Aurelia
452 Hamiltonia
457 Alleghenia
465 Alekto
465 Alekto
473 Nolli
475 Ocllo
477 Italia
478 Tergeste
482 Petrina
482 Petrina
498 Tokio
515 Athalia
520 Franziska
521 Brixia
525 Adelaide
530 Turandot
531 Zerlina
538 Friederike
557 Violetta
560 Delila
561 Ingwelde
567 Eleutheria
574 Reginhild
582 Olympia
603 Timandra
609 Fulvia
610 Valeska
611 Valeria
612 Veronika
621 Werdandi
627 Charis
632 Pyrrha
633 Zelima
634 Ute
641 Agnes
649 Josefa
650 Amalasuntha
652 Jubilatrix
668 Dora
672 Astarte
681 Gorgo
682 Hagar
724 Hapag
728 Leonisis
730 Athanasia
730 Athanasia
745 Mauritia
747 Winchester
749 Malzovia
750 Oskar
756 Lilliana
765 Mattiaca
780 Armenia
801 Helwerthia
805 Hormuthia
806 Gyldenia
826 Henrika
827 Wolfiana
833 Monica
870 Manto
873 Mechthild
880 Herba
924 Toni
978 Aidamina
989 Schwassmannia
1061 Paeonia
1110 Jaroslawa
1188 Gothlandia
1220 Crocus
1470 Carla
2020 Ukko
2375 Radek
5143 Heracles
57868 Pupin
Jupiter VI Himalia

 

Period

12.861 hrs
13.722 hrs
13.722 hrs
8.6607 hrs
7.047 hrs
7.0473 hrs
15.089 hrs
15.028 hrs
11.571 hrs
11.571 hrs
12.312 hrs
8.3743 hrs
8.376 hrs
9.935 hrs
9.927 hrs
9.9341 hrs
13.110 hrs
13.095 hrs
13.109 hrs
10.407 hrs
15.773 hrs
15.706 hrs
5.530 hrs
5.5296 hrs
5.5293 hrs
18.609 hrs
18.608 hrs
18.613 hrs
12.176 hrs
31.893 hrs
31.963 hrs
31.900 hrs
12.838 hrs
12.839 hrs
12.834 hrs
12.837 hrs
8.909 hrs
8.909 hrs
21.040 hrs
13.175 hrs
20.704 hrs
14.315 hrs
9.036 hrs
9.035 hrs
18.147 hrs
13.663 hrs
6.082 hrs
6.0814 hrs
6.081 hrs
15.853 hrs
14.851 hrs
15.806 hrs
35.864 hrs
17.270 hrs
17.268 hrs
14.025 hrs
10.943 hrs
10.945 hrs
23.562 hrs
16.504 hrs
16.479 hrs
18.127 hrs
23.613 hrs
23.625 hrs
23.743 hrs
37.150 hrs
14.256 hrs
14.257 hrs
22.072 hrs
22.072 hrs
31.466 hrs
46.551 hrs
10.712 hrs
9.873 hrs
5.3672 hrs
77.81 hrs
5.179 hrs
5.1812 hrs
17.190 hrs
25.676 hrs
34.407 hrs
34.415 hrs
22.005 hrs
15.071 hrs
26.038 hrs
8.1347 hrs
25.224 hrs
7.9597 hrs
15.825 hrs
24.476 hrs
7.281 hrs
7.287 hrs
7.2798 hrs
16.136 hrs
47.009 hrs
14.539 hrs
13.856 hrs
13.858 hrs
12.323 hrs
23.866 hrs
80.088 hrs
21.797 hrs
21.812 hrs
19.842 hrs
22.346 hrs
17.604 hrs
15.677 hrs
15.679 hrs
10.3795 hrs
37.394 hrs
23.670 hrs
24.052 hrs
19.489 hrs
14.905 hrs
30.098 hrs
27.937 hrs
27.937 hrs
25.470 hrs
25.253 hrs
25.272 hrs
59.755 hrs
10.443 hrs
20.283 hrs
9.401 hrs
7.3556 hrs
11.147 hrs
26.476 hrs
14.244 hrs
22.016 hrs
21.904 hrs
26.473 hrs
12.336 hrs
12.093 hrs
11.912 hrs
84.94 hrs
10.864 hrs
5.8949 hrs
19.499 hrs
17.386 hrs
9.2276 hrs
13.011 hrs
13.018 hrs
33.128 hrs
18.787 hrs
3.8548 hrs
23.924 hrs
17.938 hrs
14.931 hrs
14.932 hrs
23.898 hrs
70.26 hrs
9.542 hrs
13.807 hrs
10.425 hrs
4.5385 hrs
273.9 hrs
12.029 hrs
22.398 hrs
12.069 hrs
20.468 hrs
42.49 hrs
22.782 hrs
25.315 hrs
12.028 hrs
28.523 hrs
16.784 hrs
16.781 hrs
16.781 hrs
2.8813 hrs
21.957 hrs
10.938 hrs
10.936 hrs
3.0786 hrs
7.3151 hrs
19.413 hrs
16.105 hrs
11.794 hrs
11.7922 hrs
41.85 hrs
10.636 hrs
16.507 hrs
28.479 hrs
19.967 hrs
19.960 hrs
16.706 hrs
46.728 hrs
5.0887 hrs
29.913 hrs
12.012 hrs
7.718 hrs
14.339 hrs
36.312 hrs
41.79 hrs
35.375 hrs
4.9047 hrs
6.977 hrs
8.243 hrs
11.777 hrs
27.888 hrs
4.1167 hrs
11.730 hrs
11.7554 hrs
177.98 hrs
10.481 hrs
16.582 hrs
2.6627 hrs
22.914 hrs
22.572 hrs
6.4606 hrs
4.8504 hrs
3.1305 hrs
5.5783 hrs
5.7345 hrs
5.7348 hrs
9.945 hrs
9.414 hrs
5.9279 hrs
6.2584 hrs
7.834 hrs
3.4640 hrs
19.891 hrs
23.939 hrs
9.510 hrs
16.861 hrs
5.9846 hrs
4.0654 hrs
12.090 hrs
122.30 hrs
11.006 hrs
12.266 hrs
19.437 hrs
10.098 hrs
107.82 hrs
7.9971 hrs
97.37 hrs
3.4916 hrs
491.4 hrs
6.1514 hrs
25.478 hrs
16.875 hrs
2.706 hrs
107.97 hrs
7.7818 hrs

Amplitude (mag.)

0.08
0.11
0.10
0.05
0.14
0.37
0.03
0.16
0.34
0.15
0.09
0.10
0.11
0.10
0.06
0.25
0.16
0.12
0.20
0.16
0.05
0.06
0.08
0.09
0.10
0.14
0.16
0.20
0.17
0.06
0.08
0.42
0.05
0.15
0.15
0.14
0.28
0.18
0.12
0.09
0.16
0.19
0.14
0.10
0.10
0.10
0.04
0.08
0.03
0.22
0.14
0.10
0.15
0.08
0.17
0.14
0.09
0.09
0.22
0.80
0.26
0.22
0.12
0.08
0.45
0.16
0.12
0.10
0.09
0.13
0.29
0.14
0.11
0.15
0.09
0.07
0.08
0.28
0.28
0.16
0.05
0.12
0.09
0.14
0.56
0.17
0.10
0.43
0.48
0.17
0.07
0.02
0.18
0.16
0.31
0.14
0.30
0.25
0.18
0.43
0.72
0.15
0.07
0.54
0.26
0.30
0.08
0.16
0.09
0.10
0.28
0.10
0.18
0.21
0.09
0.20
0.18
0.08
0.22
0.31
0.24
0.08
0.13
0.09
0.19
0.38
0.12
0.20
0.15
0.13
0.16
0.24
0.15
0.18
0.32
0.37
0.75
0.16
0.17
0.33
0.07
0.10
0.26
0.32
0.43
0.52
0.45
0.12
0.09
0.010
0.15
0.17
0.54
0.24
0.49
0.30
0.15
0.13
0.15
0.15
0.06
0.13
0.11
0.15
0.14
0.13
0.10
0.16
0.17
0.20
0.12
0.15
0.19
0.66
0.20
0.28
0.10
0.21
0.23
0.20
0.35
0.12
0.34
0.12
0.70
0.25
0.26
0.14
0.38
0.33
0.17
0.14
0.10
0.22
0.20
0.08
0.13
0.70
0.35
0.40
0.40
0.18
0.55
0.34
0.50
0.29
0.19
0.15
0.42
0.52
0.11
0.20
0.14
0.63
0.12
0.18
0.31
0.20
0.17
0.09
0.18
0.14
0.05
0.18
0.26
0.20
0.19
0.80
0.25
0.13
0.24
0.24
0.35
1.00
0.68
0.70
1.0
0.25
0.24
0.19
0.09
1.05
0.20

Acquisition Date(s)

2009
2009/10
2011
2013
2007
2009
2007
2009
2012
2014
2009
2012/13
2014
2008
2009
2010
2007/08
2009
2013
2010
2008
2010/11
2008
2011
2013
2008
2011 Jan
2011 Feb
2007
2007
2008
2009/10
2008
2009/10
2011
2012
2008/09
2010
2012
2012
2015
2008
2009
2011
2008
2007
2009
2011/12
2014
2013/14
2008
2015/16
2009/10
2008
2009
2010
2009
2011
2007
2007/08
2007
2011
2007
2012/13
2010
2010
2012/13
2014
2009/10
2011
2007
2008/09
2009
2016
2011
2015
2007
2009
2015
2008
2010
2012
2008
2010
2010
2010/11
2011
2008
2008/09
2012/13
2008
2009
2010/11
2014
2007/08
2009
2011
2013
2008
2011
2008
2011
2014
2010
2008
2012/13
2010
2011
2011/12
2011
2011
2011/12
2009
2013
2009
2013 Jan
2013 Feb-Mar
2010
2011
2012
2014
2014
2011/12
2011
2012
2012
2013/14
2012
2014 Mar-Apr
2014 May
2013/14
2014
2012
2014
2014/15
2012
2014
2013
2010
2008
2010
2011/12
2015/16
2009
2007/08
2012
2010
2014
2015
2014/15
2010/11
2009
2008
2007
2010
2014
2014
2014
2010
2015/16
2015
2013
2015
2015
2016
2008
2009
2010/11
2009
2014
2012
2014
2014
2010
2014
2013
2012
2013
2013
2014
2013/14
2015
2014
2014
2011
2012
2007/08
2013
2012
2010
2010
2013
2010
2015
2009
2012
2012
2012
2012
2011
2016
2008
2013
2009
2007
2009
2011
2010
2013
2013
2011
2009/10
2013
2016
2013
2008
2014
2012
2012
2011/12
2009
2012
2008
2010
2013
2012
2015
2013
2015
2011
2014
2014
2013
2014
2014
2011
2014/15
2011
2015
2010
2011
2015
2010

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