Light Curves 2008
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Observatory Code E17 (Leura)              Long    150d    20'     30"    Lat  -33d    42'    22"    Altitude 950m    Time UT+10h

Observatory Code E19 ( Kingsgrove)    Long    151d     5'     45"     Lat  -33d    56'    51"    Altitude 60m      Time: UT+10h

Click for Katoomba, New South Wales Forecast

 

 

Light curves of asteroid periods found in 2008.  All period are light time corrected.

* Published light curve.

 

System used and location  :

1. SCT 0.25m f/5.2 , CCD Camera ST402-ME; Location  E19

2. SCT 0.35m f/6.5 (0.5x lumicon GEG focal reducer) , CCD camera ST9-XE; Location E17

Brackets next to "Date Range" indicate the location and system used.

 

315 Constantia Date range: 02/07 - 03/07(1)

Period: 5.345h + 0.003h

Amplitude: 0.60m + 0.02m

H = 13.20: D=7.18: Albedo = 0.180: Class=S

PA= 19.5

LPAB= 246 : BPAB=3

Target of opportunity in the same field as 2066 Palala. Previous period derived by Behrend et al.(2008) at 5.37h with U=2- with amplitude of 0.11m showing a monomodal light curve indicating a polar orientation. Current work showing a more favourable orientation.
552 Sigelinde Date range:11/04/08 - 03/05/08  (1)

Period: 17.156h + 0.002h

Amplitude: 0.18m + 0.03m

H=9.39: D=73km: Albedo=0.058: Class=C

PA=14.2 - 8.9

LPAB=240: BPAB= -5

 

CALL targets
677 Aaltje

Date range: 15/07 - 18/07

Period: 16.6076h + 0.0006h

Amplitude: 0.30m + 0.02m

H=9.70: D= 63 : Albedo= 0.058: Class = C

PA= 15.9

LPAB= 339.8

BPAB= 8.4

Call target in 2007. Followed up work in 2008 apparition.

The 2008 data taken on 15/07 and 17/07 were linked using the same comparison stars. So does the data on 17/07 and that on 18/07. This confined the period to 16.7 and later confirmed with subsequent collection of data. The bimodal light curve formed fit well with a period of 16.6076h.

741 Botolphia Date range: 30/05 - 31/05(1)

Period: 23.24h

Amplitude: 0.2m

  CALL target.
788 Hohensteina*  

Date range: 11/04/08 - 31/05/08(1)

Period : 37.176h + 0.004h

Amplitude: 0.18m + 0.03m

H = 8.3 : Dia= 120 : Albedo = 0.058 : Class = C

PA (2008): 8.2 - 12.8

LPAB(2008): 220

BPAB(2008): 12

CALL targets. Previous data shows a period of 11.16h+/-0.09h(Behrend et al.(2008)).

Work in collaboration with Dr. Michael Fauerbach. 3 nights of combined long run between US and Australia allow us to constrain the period to the one described here. Any further refinement of period has to be done in the next apparition perhaps with collaboration with even wider geographical location.

Indication of NPA rotation (Harris private correspondence).

929 Algunde Date range: 30/07 - 02/08

Period: 3.3110h + 0.0008h

Amplitude: 0.13m + 0.02m

H = 12.10: Dia = 11.91: Albedo = 0.180 : Class =S

PA: 15

LPAB = 340: BPAB =8.5

PSABA target. Second apparation.
1449 Virtanen Date range: 30/05 - 08/07 (1)

Period: 30.495h + 0.005h

Amplitude: 0.60m + 0.02m

H = 12.4: Dia = 10.37: Albedo = 0.180 : Class =S

PA = 5.8 - 22.8

LPAB = 245.1 - 250.6

BPAB = 7.2 - 4.5

CALL target. Long period. Period constrained when multiple sessions were linked together due to target slow movement sharing common comparison stars.
1563 Noel Date range: 03/04 - 05/04 (2)

Period: 3.5490h + 0.0008h

Amplitude: 0.15m + 0.02m

Number of sessions:3

Data Points:167

Date range: 03/04 - 05/04 (1)

Photometric Survey for Asynchronous Binary Asteroid target.
1638 Ruanda

Date range: 11/05 - 23/06 (1)

Period: 4.2397h + 0.0002h

Amplitude: 0.10m + 0.02m

Number of sessions: 5

Data Points: 247

Data range: 11/05 - 23/06(1)

Call target. No known period. Fit well into a trimodal curve. Initially shown to be a bimodal light curve of period 3.157h appear to be caused by significant error  from earlier poor quality data. This also caused the false detection of an event.
1785 Wurm Date range: 03/03 - 06/03 (2)

Period: 3.2696h + 0.0004h

Amplitude: 0.30m + 0.01m

Number of sessions: 2

Data Points:161

Date range: 03/03 - 06/03 (2)

Photometric Survey for Asynchronous Binary Asteroid target.
1836 Komarov Date range: 11/07 - 15/07 (1)

Period: 8.081h + 0.002h

Amplitude: 0.39m + 0.02m

H = 11.30: Dia = 23.10 : Albedo = 0.100 : Class = SC

PA =3

LPAB = 287.7 :  BPAB = 2.5

CALL target.
2193 Jackson Date range: 12/04 - 29/04 (1)

Period: 4.7541h + 0.0005h

Amplitude: 0.23m + 0.03m

H=10.30: D=48km: Albedo=0.058: Class=C

PA= 9.8 - 3.3

LPAB=226: BPAB= -1

 

CALL target. No previous known period. Observation finalised with U=3
2066 Palala Date range: 27/06 - 03/07(1)

Period: 9.730h + 0.002h

Amplitude: 0.65m + 0.03m

H=12.50: D=19km~: Albedo= 0.0491: Class=S

PA= 17.6-19.8

LPAB= 246: BPAB= 3.4

CALL target. No previous known period.

 

2478 Tokai

Date range: 27/06/08 - (2)

Period: 25.88h + 0.01h

Amplitude(prim): 0.40m

Date range: 27/06/08 - 21/07/08

Date range:26/01/07 - 05/02/07 (2)

 

H=12.8: D=8.63km: Albedo = 0.180: Class =S

PA = 9.7 - 3.8

LPAB = 293 : BPAB = 5

PSABA target. Synchronous binary follow up work.
4182 Mount Locke Date range: 13/08 - 02/09

Period: 3:0175h + 0.0003h

Amplitude: 0.15m + 0.03m

H=12.20:D=15.26km: Albedo=0.100:Class=SC

PA= 5.0 - 9.2

LPAB=323 : BPAB=9.5

Target was suggested by Behrend as a suspect binary. attenuation noted at the end of session 868 is associated with poor atmospheric condition at an altitude of about 30deg. This color effect was later reprocessed and removed that eventually neutralise the light curve.
4332 Milton Period: 3.307h + 0.004h

Amplitude: 0.30 + 0.05m

 

H=11.90: D=13.06km: Albedo=0.180: Class=S

 

CALL target. No specific aim accept that its part of observations with 178 Belisana.
5034 Joeharrington Date range:02/05 - 06/05(1)

Period: 8.417 + 0.004h

Amplitude:0.35m + 0.03m

H= 12.9: D= 8.24:     Albedo= 0.180: Class= S

PA=8

 LPAB=233 : BPAB=-6.3

CALL target. No previous known period.
5315 Nunes Date range: 23/06 - 26/06(1)

Period: 2.798h + 0.003h

Amplitude: 0.24h + 0.03h

H = 12.9 : D= 8.24

Albedo = 0.180: Class = S

PA = 18 :  Lpab=247  Bpab= 4

CALL target. No previous known period
5481 Kiuchi

P_Orb =20.895h + 0.003h

P_1= 3.6199h + 0.0003h

Amplitude_1: 0.05 + 0.02mag

Amplitude_Orb:

Number of sessions:

Data Points:

Data range: 13/03/07 - 05/04/07  (2)

Photometric Survey for Asynchronous Binary Asteroid target.  Its a confirmed binary.
5905 Johnson Period: 3.487h + 0.003h

Amplitude: 0.10m + 0.03m

  PSABA target. Asynchronous Binary asteroid follow up work.
7516 Kranj Date range: 12/04 - 29/04 (2)

Period: 3.9667h + 0.0003h

Amplitude: 0.18h + 0.03h

Number sessions:6

Data Points: 277

Date range: 12/04 - 29/04 (2)

Photometric Survey for Asynchronous Binary Asteroid target
7965 Katsuhiko Date range: 28/06 - 08/07 (1)

Period: 5.3899h + 0.0004h

Amplitude: 0.40m + 0.02m

(+)H=12 : Dia = 21.02 : Albedo = 0.0634 : Class = S

PA=15.0 - 12.1

LPAB = 285 : BPAB = 19-16

Collaboration  with Collin Bembrick and his suggested targets.
13189 1997 AF13

Date range: 21/06 - 26/06 (2)

Period: 5.9371h + 0.0006h

Amplitude: 1.1m + 0.1m

 H = 14 : Dia = 4.96 : Albedo = 0.180 : Class = S

PA = 11.7

LPAB = 243 : BPAB = 7

PSABA target.
15515 1999 VN80 Data range: 30/07 - 04/08

Period : 4.175h + 0.002h

Amplitude: 0.38m + 0.02m

H =13.90 : Dia = 9.16: Albedo = 0.058 : Class =C

PA = 13.4 - 11.2

LPAB = 331

 

Target in the same field while observing 929 Algunde. Data combined with those obtained by Jozef Vilagi from Modra observatory.
153591

2001 SN 263

Date range: 13/03 - 31/03 (1)

Period: 3.4251h + 0.0002h

Amplitude: 0.10m + 0.05m

H = 16.32 : Dia = 1.71: Albedo = 0.180 : Class = S

PA =26.7 - 24.8

LPAB = 169 - 185.1

BPAB = -15.9 - (-16.3)

Photometric Survey for Asynchronous Binary Asteroid target

References:

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