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					Aspects of Asteroid Photometry: Observing Campaigns
Richard Miles

Photometric Observing Campaigns
• Rotational lightcurves • Phase curves NEOs and Main-Belters

Rotational Lightcurves

Visual Photometry

TELESCOPIC VIEW

REPORT FORM

LIGHTCURVE

Examples of BAA Photometric Observing Campaigns (Part 1)
• 1 Ceres • 18 Melpomene

Ceres

Melpomene

Rotational Lightcurves Photoelectric Photometry

416 Vaticana
– individual observing runs

416 Vaticana – composite lightcurve

Examples of BAA Photometric Observing Campaigns (Part 2)
• 8 Flora • 11 Parthenope • NEO 2006 XD2

8 Flora

Parthenope

NEO Observing Campaigns The Case of 2006 XD2 (H=21.1)

Composite Lightcurve

International Collaboration
• CALL = Collaborative Asteroid Lightcurve List (Brian Warner)
Website: http://www.minorplanetobserver.com/astlc/default.htm

• CdR-CdL = Courbes de Rotation / Courbes de Lumière (Raoul Behrend)
Website: http://obswww.unige.ch/~behrend/page_cou.html

• BinAst = Asynchronous Binary Asteroid Project (Petr Pravec)
Website: http://tech.groups.yahoo.com/group/binastphotsurvey/

Phase Curves

Phase brightening

Opposition Effect

Examples of Phase Curves: From Muinonen et al. published in “Asteroids III”

Asteroids III Plot

(130) Elektra – Composite Lightcurve
-0.2

-0.1

Relative V Magnitude

0.0

0.1

0.2 (130) Elektra in 2005
999 measures on 17 nights

0.3
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Rotational Phase (Period = 5.2248 hr)
130 B&W

Asteroid (130) Elektra
11.6

[ 2005 Feb 14 - Apr 10, 17 nights ]

V magnitude (Phase Angle = 0.34 deg)

11.7

11.8

11.9

12
Richard Miles Golden Hill Obs. 280 mm SCT (clear) 60 mm Refr. (V filter) 60 mm Refr. (I filter)

12.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Rotational Phase (Period = 5.2248 hours)

130 Electra Composite

-0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 2 4 6 8 10 12 14 16 18 20
Richard Miles Golden Hill Obs. 280 mm SCT (clear) 60 mm Refr. (V filter) 60 mm Refr. (I filter)

Reduced Magnitude (rel. to Ph. Angle = 0.34 deg)

(130) Elektra - Phase Curve

Phase Angle, deg

130 Phase Curve

BAA HANDBOOK

Future Plans based on BAA Handbook

BAA Handbook 2008

Favourable Rotation

Near-Earth Asteroid Opprtunities in 2008

2005 WJ56 4450 Pan 2001 SN263 2005 GN59

Near-Earth Asteroid Opprtunities in 2008

2005 WJ56 4450 Pan 2001 SN263 2005 GN59

Near-Earth Asteroid Opprtunities in 2008

2005 WJ56 4450 Pan 2001 SN263 2005 GN59

Near-Earth Asteroid Opprtunities in 2008

2005 WJ56 4450 Pan 2001 SN263 2005 GN59

Future Plans - BAA Handbook

Low Phase Angle 2008 All

Favourable Low Phase Angle in 2008

Bright Low Phase Angle in 2008

Photometric Observing Campaigns Let’s Co-operate !


				
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