Presentation is loading. Please wait.

Presentation is loading. Please wait.

T. Schildknecht, A. Vananti, A. Hinze

Published byLilla Virág Lukácsné Modified over 6 years ago

Similar presentations

Presentation on theme: "T. Schildknecht, A. Vananti, A. Hinze"— Presentation transcript:

1 T. Schildknecht, A. Vananti, A. Hinze
Long-term Evolution of High Area-to-Mass Ratio Objects in Different Orbital Regions T. Schildknecht, A. Vananti, A. Hinze Astronomical Institute, University of Bern, Switzerland PEDAS Astronomical Institute University of Bern

2 Outline The AIUB/ESA HAMR Catalogue Orbit Evolution in GEO & MEO
Summary T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

3 Catalogue of Small-Size Space Debris
Build-up and maintenance of orbit catalogue of decimeter-sized debris in GEO/GTO/MEO Why? Density/collision risk lower than in LEO BUT: No sinks  population constantly grows  Mitigation of debris is important Need to know nature and sources of debris Requires: Orbit catalogue Constant monitoring due to perturbations by non-gravitational forces T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

4 Sensors 1-m ESA Telescope Tenerife 1-m ZIMLAT Switzerland
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India 1-m ZIMLAT Switzerland Mittel Astronomical Institute University of Bern

5 High AMR GEO/GTO Catalogue
Discover new objects: Obs. From Tenerife (OGS, AIUB) Secure orbits: obs. from OGS, Zimmerwald (AIUB) Maintain orbits: obs. from OGS, Zimmerwald, international partners, International Scientific Optical observation Network (ISON), ... Daily orbit maintenance at AIUB and Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences (KIAM) Orbit catalogue of high-altitude space debris Provide predictions: To other partners (CNES, JAXA, NASA, Roscosmos...)  to investigate physical properties of objects T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

6 ESA 2008 GEO/GTO Surveys Continuous program, ~80 nights per year
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

7 6-param. Orbits - i vs Ω Astronomical Institute University of Bern
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

8 “Routine” ZIMLAT Support
ZIMLAT Observation Nights T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India ZIMLAT Observations / Objects Astronomical Institute University of Bern

9 High AMR GEO/GTO Catalogue
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

10 High AMR GEO/GTO Catalogue
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India standard office paper Astronomical Institute University of Bern

11 Outline The AIUB/ESA HAMR Catalogue Orbit Evolution in GEO & MEO
Summary T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

12 Methodology Assumption
There are sources of high AMR debris when objects are left in space for long time span (aging processes, breakup-events, ...) Question What are the impacts for the concept of "graveyard" orbits Method Propagate orbits of a sample of observed debris over a time interval of 50 years assuming different AMR values (0.02, 0.02, 1, 5, 15 m2/kg). T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

13 Propagator CelMech SATORB Propagator
numerical integrator (variable step size) 12 x 12 Earth gravity field gravitational perturbations from Sun Moon Earth tides corrections due to general relativity direct radiation pressure (Sun only) eclipses (Earth, Moon) T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

14 Sample of super-GEO Objects
Sample of 30 debris objects in super-GEO region a > 42464km (>300km above GEO) e < 0.05; then set to 0.001 t0 = 55000mjd ( ) T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

15 Evolution of Semimajor Axis
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

16 Evolution of Eccentricity
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

17 Evolution of Perigee Height
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

18 Evolution of Orbital Plane
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

19 GEO Graveyard Objects in GEO graveyard orbits (>300km above GEO) will cross GEO altitude if AMR>0.2m2/kg will also cross 0° GEO region for particular inclination/argument of perigee combinations orbital plane and argument of perigee are both changing over time precession of orbital planes not significantly changed for AMR<5m2/kg Consistent with IADC deorbit guideline: ΔHmin = *cr*AMR [km]  435km for AMR=0.2m2/kg T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

20 Sample of super-GPS/GLONASS Objects
Sample of super-GPS objects (14) a > 27400km (>900km above GPS) all orbital elements at actual values t0 = 55000mjd ( ) Sample of GLONASS objects in plane G2 (11) a ≈ 25508km T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

21 Evolution of Semimajor Axis
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

22 Evolution of Eccentricity (GPS)
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

23 Evolution of Eccentricity (GLONASS)
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

24 Evolution of Perigee Height (GPS)
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

25 Evolution of Perigee Height (GLONASS)
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

26 Evolution of Orbital Plane
T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

27 GPS/GLONASS Orbits Strong gravitational perturbations of GPS orbits due to 2:1 mean motion resonance eccentricity inclination, precession of orbital plane Objects in GPS graveyard orbits (>900km above GPS) will cross GPS altitude if AMR ≳ m2/kg OR e(t0) ≳ 0.01 Perigee height of GLONASS orbits will change by >1000km if AMR ≳ 1m2/kg T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

28 Conclusions Catalogue of high AMR GEO/GTO objects
significant debris population with high AMR found in GEO and GTO region orbits maintained by sharing the data in a network of observatories (KIAM, ISON) GEO/MEO graveyards sources of high AMR debris to be expected when objects are left in space for long time span (aging processes, breakup-events, ...) objects in GEO graveyard (300km above GEO) will cross GEO altitude if AMR>0.2m2/kg perigee height of objects in GPS/GLONASS orbits will change for >1000km if AMR≳1m2/kg long-term evolution of GPS orbits dominated by gravitational resonance effects for e(t0) ≫ 0.01 T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

29 Acknowledgments Great thanks to our staff and observers at the OGS and Zimmerwald observatories! Support in the form observations to maintain the orbits is provided by the Keldysh Institute of Applied Mathematics (KIAM) in the framework of the ISON collaboration (AIUB-KIAM collaboration). T. Schildknecht: Long-term Evolution of High Area-to-mass Ratio Objects 39th COSPAR Scientific Assembly, July, 2012, Mysore, India Astronomical Institute University of Bern

Download ppt "T. Schildknecht, A. Vananti, A. Hinze"

Similar presentations

Research Centre of Astronomy and Geophysics Mongolian Academy of Sciences Study of near-earth objects in Mongolia. Space debris, asteroids and comets Outreach.

Research Centre of Astronomy and Geophysics Mongolian Academy of Sciences Study of near-earth objects in Mongolia. Space debris, asteroids and comets Outreach.
GN/MAE155B1 Orbital Mechanics Overview 2 MAE 155B G. Nacouzi.

GN/MAE155B1 Orbital Mechanics Overview 2 MAE 155B G. Nacouzi.
More Satellite Orbits Introduction to Space Systems and Spacecraft Design Space Systems Design.

More Satellite Orbits Introduction to Space Systems and Spacecraft Design Space Systems Design.
DEBRIS REMOVAL DESIGN DRIVERS BASED ON TARGET SELECTION 2 nd European Workshop on Active Debris Removal CNES HQ, Paris, 18 th - 19 th July 2012 Adam White:

DEBRIS REMOVAL DESIGN DRIVERS BASED ON TARGET SELECTION 2 nd European Workshop on Active Debris Removal CNES HQ, Paris, 18 th - 19 th July 2012 Adam White:
Институт прикладной математики им. М.В.Келдыша РАН Keldysh Institute of Applied Mathematics, Russian Academy of Sciences.

Институт прикладной математики им. М.В.Келдыша РАН Keldysh Institute of Applied Mathematics, Russian Academy of Sciences.
Astronomical Institute University of Bern 64 th International Astronautical Congress 23-27 September 2013, Beijing, China Assessment of possible observation.

Astronomical Institute University of Bern 64 th International Astronautical Congress September 2013, Beijing, China Assessment of possible observation.
Prince William Composite Squadron Col M. T. McNeely Presentation for AGI Users Conference CIVIL AIR PATROL PRESENTS The CAP-STK Aerospace Education Program.

Prince William Composite Squadron Col M. T. McNeely Presentation for AGI Users Conference CIVIL AIR PATROL PRESENTS The CAP-STK Aerospace Education Program.
Universal Gravitation

Universal Gravitation
Spacecraft Launch Vehicles

Spacecraft Launch Vehicles
Tides.

Tides.
AT737 Satellite Orbits and Navigation 1. AT737 Satellite Orbits and Navigation2 Newton’s Laws 1.Every body will continue in its state of rest or of uniform.

AT737 Satellite Orbits and Navigation 1. AT737 Satellite Orbits and Navigation2 Newton’s Laws 1.Every body will continue in its state of rest or of uniform.
International collaboration as a primary way for the ISON network development Igor Molotov, Vladimir Agapov Russian Academy of Sciences Keldysh Institute.

International collaboration as a primary way for the ISON network development Igor Molotov, Vladimir Agapov Russian Academy of Sciences Keldysh Institute.
ESPACE Porto, June 2009 MODELLING OF EARTH’S RADIATION FOR GPS SATELLITE ORBITS Carlos Javier Rodriguez Solano Technische Universität München

ESPACE Porto, June 2009 MODELLING OF EARTH’S RADIATION FOR GPS SATELLITE ORBITS Carlos Javier Rodriguez Solano Technische Universität München
MONGOLIAN-RUSSIAN COOPERATION IN KHURELTOGOOT OBSERVATORY IN THE ISON PROJECT FRAMEWORK N.Tungalag 1, I.Molotov 2, V.Voropaev 2, V.Kouprianov 3, Yu.Krugly.

MONGOLIAN-RUSSIAN COOPERATION IN KHURELTOGOOT OBSERVATORY IN THE ISON PROJECT FRAMEWORK N.Tungalag 1, I.Molotov 2, V.Voropaev 2, V.Kouprianov 3, Yu.Krugly.
Long-term evolution of the space debris population Dr Hugh Lewis Astronautics Research Group, Faculty of Engineering & the Environment.

Long-term evolution of the space debris population Dr Hugh Lewis Astronautics Research Group, Faculty of Engineering & the Environment.
Gravity & orbits. Isaac Newton (1642-1727) developed a mathematical model of Gravity which predicted the elliptical orbits proposed by Kepler Semi-major.

Gravity & orbits. Isaac Newton ( ) developed a mathematical model of Gravity which predicted the elliptical orbits proposed by Kepler Semi-major.
Optimal Low-Thrust Deorbiting of Passively Stabilized LEO Satellites Sergey Trofimov Keldysh Institute of Applied Mathematics, RAS Moscow Institute of.

Optimal Low-Thrust Deorbiting of Passively Stabilized LEO Satellites Sergey Trofimov Keldysh Institute of Applied Mathematics, RAS Moscow Institute of.
Improved SSA through Orbit Determination of Two-Line Element Sets David A. Vallado, Benjamin Bastida Virgili, and Tim Flohrer Paper 6ECSD 13-4a.0-7 presented.

Improved SSA through Orbit Determination of Two-Line Element Sets David A. Vallado, Benjamin Bastida Virgili, and Tim Flohrer Paper 6ECSD 13-4a.0-7 presented.
ISON dedicated survey instruments development Igor Molotov, Vladimir Agapov Russian Academy of Sciences Keldysh Institute of Applied Mathematics 64th International.

ISON dedicated survey instruments development Igor Molotov, Vladimir Agapov Russian Academy of Sciences Keldysh Institute of Applied Mathematics 64th International.
Space Asteroids Raynaldo 6B.

Space Asteroids Raynaldo 6B.

Similar presentations

Ads by Google