Appendix A: List of ESA-owned satellites

Predicted Satellite Dry Mass Shape Rotation Rot_vec_ Rot_vec_ Rot_vec_ Ref. Orbit Class Orbit (km) Launch Date Reentry Reference epoch Attitude state Type Comment Name (kg) (LxHxD) period [s] X Y Z frame Date 214 x 21063 @ Cyl (1.2 x 0.8 x Cat3 GTO 215 19/06/1981 2026 10.2 1.2m) Box + 2 Pan GEO 37831 x 36810 MARECS A 588 20/12/1981 N/A (2.0 x 2.5 x graveyard @ 15.3 13.8m) Cyl + Cone 269 x 26419 @ Cat4 GTO 215 20/12/1981 2109 (1.5 x 2.5 x 10.4 4.0m) Box + 2 Pan GEO 37551 x 36548 MARECS B2 588 10/11/1984 N/A (2.0 x 2.5 x graveyard @ 16.5 13.8m) Box + 2 Pan GEO 35541 x 35420 Olympus 1 2595 12/07/1989 N/A (2.7 x 5.6 x intersecting @ 14.8 25.7m) Hex Cyl + 1 488 x 35790 Dome + 3 Pan HIPPARCOS GTO 1130 08/08/1989 6027 @ 7.2 (2.5 x 3.5 x 5.5m) Box + 1 Pan 742 x 791 @ non-controlled, Source: ERS-1 LEO 2140 17/07/1991 2135 (1.9 x 5.59 x 2016-09-22 02:34 1433.22 Inertial 0.00199 -0.000599 0.00509 ECI/J2000 98.5 tumbling FHR, ISAR 11.79m) Box + 1 Pan 499 x 502 @ non-controlled, Source: ERS-2 LEO 2140 21/04/1995 2025 (1.9 x 5.59 x 2016-09-22 02:10 407.75 Inertial 0.0013 -0.000138 -0.00825 ECI/J2000 94.6 tumbling FHR, ISAR 11.79m) 574 x 70040 Cylinder (2.77 ISO HEO 2475 17/11/1995 N/A @ 5.2 x 3.56 x 5.3m) 580 x 26398 Octl Cyl (5.0 x Maqsat-H GTO 2269 10/10/1997 N/A @ 1.6 3.0 x 5.0m) Box + 1 Pan 764 x 766 @ non-controlled, Source: Envisat LEO 8110 01/03/2002 2280 (4.5 x 10.0 x 2016-09-21 20:37 214.6206 Inertial 0.002115 0.01803 0.009189 ECI/TEME 98.2 tumbling AIUB, SLR 26.0m) Sloshsat- 290 x 32783 Box (0.7 x 1.0 GTO 127 12/02/2005 2335 FLEVO @ 7.1 x 1.0m) Cyl + Cone VESPA Upper 664 x 801 @ LEO 100 07/05/2013 2045 (2.1 x 1.3 x Part 99.5 2.1m)

Additional possible objects include:

Predicted Satellite Dry Mass Shape Rotation Rot_vec_ Rot_vec_ Rot_vec_ Ref. Orbit Class Orbit (km) Launch Date Reentry Reference epoch Attitude state Type Comment Name (kg) (LxHxD) period [s] X Y Z frame Date Cyl + Cone 35727 x 36358 MSG-2 AKM GEO 34 19/06/1981 N/A (0.77 x 1.12 x @ 13.5 1.12m) Cyl + Cone 35188 x 36273 MSG-4 AKM GEO 34 06/03/1989 N/A (0.77 x 1.12 x @ 14.0 1.12m) Cyl + Cone 35155 x 36477 MSG-5 AKM GEO 34 02/03/1991 N/A (0.77 x 1.12 x @ 14.4 1.12m) Box + 2 Pan 23325 x 23368 non-controlled, Source: Giove A MEO 600 28/12/2005 N/A (1.8 x 1.3 x 2016-11-17 00:00 N/A N/A N/A N/A N/A N/A @ 57.5 tumbling AIUB, LC 11.0m) Box + 2 Pan 23822 x 23825 non-controlled, Source: Giove B MEO 530 27/04/2008 N/A (1.0 x 2.4 x 2016-12-09 00:00 148.8 Apparent N/A N/A N/A N/A @ 57.5 tumbling AIUB, LC 11.0m) Cyl + 2 Ant 2914 x 38239 (ESA) GEOS 1 GTO 270.6 20/04/1977 N/A (1.6 x 1.3 x @ 26.6 40.0m) Hexagonal GEO 36148 x 36067 cylinder (1.68 OTS 2 440.04 11/05/1978 N/A graveyard @ 13.6 x 2.13 x 2.39m) Cyl + 2 Ant GEO / GEO 36064 x 36014 (ESA) GEOS 2 273.6 14/07/1978 N/A (1.6 x 1.3 x graveyard @ 12.07 40.0m) 443 x 23370 Cyl (2.6 x 8.59 H8 Ariane 1 GTO 1318 02/07/1985 3811 @ 8.2 x 8.59m)

Where the MSG-2 AKM, MSG-4 AKM and MSG-5 AKM, if considered, should be considered together.