Lunar Reconnaissance Orbiter

 2009-031A

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First new exploration initiative mission. Bus from GSFC MOC control center at GSFC (EOS). 50 km polar orbiter with mapping and radiation studies. EELV 1706 kg full 809 kg dry. Box + 1 panel.

Mass 1916 kg (PK) at launch, 1018 kg dry with 898 kg prop. Size 3.9m x 2.6 x 2.8m stowed, plus 4.3 x 3.2m solar array and 2.6m HGA; span is around 6.0m.

LRO
Date	Time	Event	Orbit
2009 Jun 18	2132:00	Launch by Atlas V 401	CC LC41
		T+4:10 Atlas sep
		T+4:20 MES-1
		T+4:30 Fairing sep
	2146	T+14:01 MECO-1	167 x 200 x 28.5
		T+38:28 MES-2
	2215:23	T+43:23 MECO-2	165 x ?
			180 x 208 x 28.5
		Direct insertion TLI
			194 x 353700 x 28.18
			197 x 355471 x 28.51
	2218	T+46:12 EDUS/LCROSS sep from LRO
			199 x 351994 x 28.5
2009 Jun 19	1334	LRO pass EL1:4
	2216	TCM-1 38s 1.3m/s
2009 Jun 22	1715	Enter L sphere
2009 Jun 23		LOI-E engineering burn
2009 Jun 23	0947	LOI 40min
	0950	1000 km alt
	1010	280 km periselene
	1026:28	LOI CO	220 x 3100 x 90
2009 Jun 24	1056s	LOI-2 12min	200 x 1680 x 89.9
2009 Jun 25	1032	LOI-3 12 min	199 x 740 x 89.93
2009 Jun 26	1225	LOI-4 10 min	200 x 200 x 89.9?
2009 Jun 27	1234	LOI-5 230.8s, 36m/s	31 x 199 x 90.2
		Commissioning orbit 30 x 216 x 90?, peri on S pole
2009 Jul 5	s		40 x 200 x 90.1
2009 Jul 9	s		48 x 192 x 90.1
2009 Jul 16	s		30 x 209 x 90.6
2009 Sep 9		Commissioning complete
2009 Sep 15	1932	3 min burn 29m/s Mission Orbit Insertion, peri over S pole, Lower to op orbit	50 x 50 x 89.7
2009 Oct	s		36 x 65 x 90.0
2010 Jul 24	s		38 x 63 x 89.2
2011 Aug 1			50 x 50?
2011 Aug 10		Lower perilune	20 x 50

Payload:

• LROC Lunar Reconnaissance Orbiter Camera (ASU/Robinson)

  • NAC Narrow angle cameras, 2: f/4.5 f=700m 50cm res. pan, aperture 0.20m each and

  • WAC wide angle multispectral camera, 3000-6800A near UV and visible, 100m/pixel (study resources like TiO-rich rocks for Fe/Ti/O breakdown; find permanently shadowed and illuminated regions. (Derived from MRO-MARCI)

• LOLA Lunar Orbiter Laser Altimeter (GSFC/D.Smith)

• LEND Lunar Exploration Neutron Detector (IKI/Mitrofanov)

• LAMP Lyman Alpha Mapping Project, UV imager for craters (SWRI-San Antonio/Gladstone)

• Mini-RF SAR with X-band and S-band modes, 1.2 x 0.7m antenna (LPI/Nozette)

• CRATER Cosmic Ray telescope for the Effects of Radiation; with tissue equivalent plastic dosimeters (BU/Spence)

• DLRE Diviner Lunar Radiometer Experiment (UCLA/Paige)