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2013

Light Curves

Observatory Code Q68 (BMO)             Long    150d   20'     14.6"    Lat  -33d    42'    07.6"    Altitude 957m    Time UT+10h
Observatory Code E19 ( Kingsgrove)     Long    151d     5'     45"      Lat  -33d    56'    51"       Altitude 60m      Time: UT+10h

System used and location:
1. SCT 0.25m f/5.2 (Meade focal reducer) , CCD Camera SBIG ST9XE                                                          Location  E19
2. SCT 0.35m f/11, CCD camera SBIG ST 8 XME                                                                                        Location Q68

Bracket next to Date Range indicate the location and system used. All period are light time corrected. An asterisk (*) after the name indicate published light curve in Minor Planet Bulletin.
PSABA: Photometric Survey of Asynchronous Binary Asteroids CALL: Collaborative Asteroid Light curve Link



357 Ninina
All sessions were linked internally using Canopus V10 CSS method. Red J-C photometric filter were used. No zero point adjustment were made and 0.1 magnitude dispersion could be from tumbling effect. however the slope fitted well into the light curve suggesting that dispersion was due to change in phases and shadowing.


357 Ninina
This light curve was after the individual sessions zero point were adjusted so they all line up.

The period of close to 36 and is 1.5 times commensurate to rotation period of earth.

The light curve is not unique and will require collaboration.

582 Olympia

806 Gyldenia

870 Manto

1110 Jaroslawa
H =11.40; G = 0.15
Diameter = 16.44; Albedo = 0.180; Class=S

PA= 6.9, 3.3, 19.2
PABB


1367 Nongoma

1387 Kama

1717 Arlon

1717 Arlon_09-12Jun

1830 Pogson
Observations in collaboration with PSABA group. Sessions showing events hence the incongruent light curves. however the primary period is correctly shown.

1979 Sakharov

2055 Dvorak
Data captured with 24" .
PSABA target

2897 Ole_Romer

3060 Delcano
PSABA target

3951 Zichichi
PSABA light curves collaboration with some event captured

26984 Fernand-Roland

4905 Hiromi
PSABA target

6265 1985 TW3

6401 Roentgen
Nearly 12 hours rotation period or 0.5 times commmensurate with earth rotation. Need collaboration to get a unique solution

10484 Hecht

11901 PV 11

26636 2000 HX57

29818 1999 CM117

30769 1984 ST2
Another target of opportunity and only obtain 1 session.

30706 2001 OP83

43904 1995 WO
although all sessions were linked, if data zero point were adjusted then there is a period found to be 4.59 hours but with extremely low amplitude of 0.07magnitude. with such low amplitude, the period search tend to latch on to an incorrect period. Further observations required.

43904 1995 WO
All sessions were linked and 43904 found to be a long period asteroid with period approaching 100h.
PSABA target

49636 1999 HJ1
PSABA target

67747 2000 UF43
Opportunity target but period is very provisional. Since the data plot is quite sparse and the duration of the observation is short, this conclusion is not reliable.

99942  Apophis

12854 1998 HA13
This long period asteroid is most likely a tumbler especially due to the different value of the slope diverged from the average light curve.

 
 

214736 2006 TY38

163364 2002 OD20

285263 1998 QE2
The close approach of this asteroid provide opportunity for the astronomical community in asteroid research. Radar observations show that this asteroid is a multiple system that photometric observations will show distinctive light curve that suggest binary or multiplicity. However due to the apparent speed during close approach, the light curve changes dramatically making linkages within the nightly observation difficult

 
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