1. V. Agapov, D. Zelenov 35th IADC meeting Darmstadt, 24-26 April 2017
Results of observations of space debris at high near-Earth orbits with electro-optical sensors of ASPOS OKP system in 2016
V. Agapov, D. Zelenov
35th IADC meeting
Darmstadt, April 2017

2. Operational network of optical facilities of ASPOS OKP (KSOES)
Experimental optical facility (EOP)
of the first type
Experimental optical facility (EOP)
of the second type
EOP-1-1
EOP-1-3
EOP-2-1
EOP-2-2
EOP-1-2
EOP-1-4
Electro-optical instrument with aperture 65 cm (OES65)
Electro-optical instrument with aperture 50 cm (OES50)
Electro-optical instrument with aperture 25 cm (RKS)
Experimental optical facilities’ design is based on modular approach providing for possibility of adding new optical sensors, increasing computing power as well as relocation to a new place.

3. Operational network of optical facilities of ASPOS OKP
EOP-1 (4 facilities)
Each facility includes
2 telescopes with 19 cm aperture
1 telescope with 25 cm aperture
1 telescope with 40 cm aperture
EOP-2 (2 facilities)
4 telescopes with 19 cm aperture
1 telescope with 65 cm aperture
OES-65
RKS-25
OES-50
Total:
21 instruments

4. Experimental optical facility (EOP)
of the first type

5. Experimental optical facility (EOP)
of the second type

6. Key characteristics of telescopes
Telescope 19 cm
Telescope 25 cm
Aperture, mm
190
250
Effective focal length, mm
296
625
FOV angular diameter, deg 10
4.8
FOV linear size, мм 52
Quality of imaging
Diffraction-limited
Sensitivity at 5 s exposure time for GEO angular rates and S/N=3, mag
+14,7m
+16,1m

7. Key characteristics of telescopes
Telescope 40 cm
Telescope 50 cm
Aperture, mm
400
500
Effective focal length, mm
920
1600
FOV angular diameter, deg
3.2
1,9
FOV linear size, мм 52
Quality of imaging
Diffraction-limited
Sensitivity at 5 s exposure time for GEO angular rates and S/N=3, mag
+18,0m
+17,4m

8. Key characteristics of telescopes
Telescope 65 cm
Aperture, mm
650
Effective focal length, mm
1300
FOV angular diameter, deg
3,8
FOV linear size, мм 86
Quality of images
Diffraction-limited
Sensitivity at 5 s exposure time for GEO angular rates and S/N=3, mag
+18,6m

9. View of telescopes 25 cm telescope 4 х 19cm telescope 40cm telescope

10. Number of high orbit objects observed by individual ASPOS OKP optical facilities in 2016

11. Cumulative GEO and HEO objects discovery statistics (ASPOS OKP and ISON)
Optical facilities of ASPOS OKP have collected more than 8 millions of measurements in 2016 for more than 3400 space objects at high orbits (GEO, MEO, HEO). Instruments of the network have discovered 530 new and re-discovered more than 410 lost GEO and HEO space debris objects during 2016.
At present ASPOS OKP provides for more than 90% of discoveries of new objects at high orbits

12. Distribution of GEO objects:
comparison for 01 Jan 2016 and 01 Jan 2017

13. Distribution of GEO fragments
having AMR<0.5 sq.m/kg

14. Distribution of HEO and MEO objects:
comparison for 01 Jan 2016 and 01 Jan 2017

15. Distribution of HEO and MEO objects:
comparison for 01 Jan 2016 and 01 Jan 2017

16. New optical facility of ASPOS OKP in the Western hemisphere
OEK OKM optical complex
Brasil, Itajubá
Official opening ceremony took place on Apr 5, 2017
Itajuba
Observatório Pico dos Dias
22°32′04″S 45°34′57″W
1864 m

17. OEK OKM (Observatório Pico dos Dias, Itajubá)
Key characteristics of telescopes
Sova-75-O:
Diameter – 750 mm
Angular FOV – 7 deg
Linear FOV – 170,0 mm
Sova-25:
Diameter – 250 mm
Angular FOV – 10 deg
Linear FOV – 72,3 mm
Sova-5:
Diameter – 50 mm
Angular FOV – 40 deg

18. OEK OKM (Observatório Pico dos Dias, Itajubá)
Name of unit
Instantaneous FOV
Average number of observed objects per night
Minimal size of observed objects
Astrometric accuracy
Module of detection high-orbit objects (heights 3500 to km)
26 sq. deg
500
20-25 cm
0,5 arcsec
Module of detection of LEO (heights 500 to 3500 km)
98 sq. deg
350
15-20 cm
3 arcsec
Module of detection of LEO (heights 120 to 800 km)
1568 sq. deg
600
40-50 cm
10 arcsec

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Контакты
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