An analysis of the 2016 Hitomi breakup event

Earth, Planets and Space

Table 3 Results of simulated fragmentation with Hitomi and debris. \(N_C({>}0.1)\)—number of fragments larger than 10 cm generated from the conjunction

NORAD ID	Name	B _C (m²/kg)	RCS (m²)	v _rel (km/s)	m _s (kg)	\(N_C({>}0.1)\)
10227	DELTA 1 DEB	0.0638	0.2603	7.331	8.9759	1.926*
26550	DNEPR 1 R/B	0.0129	9.2720	4.738	1.581	2.714*
30455	FENGYUN 1C DEB	0.0841	0.0282	9.176	0.7377	113
30687	FENGYUN 1C DEB	0.5798	0.0195	11.766	0.0740	29
30980	FENGYUN 1C DEB	0.5744	0.0127	13.436	0.0486	26
31998	FENGYUN 1C DEB	0.6068	0.0118	13.283	0.0428	23
34333	COSMOS 2251 DEB	0.3502	0.0354	6.211	0.2224	25
34398	COSMOS 2251 DEB	0.2723	0.0317	7.976	0.2561	41
34657	IRIDIUM 33 DEB	0.7428	0.0136	7.047	0.0403	8
34858	COSMOS 2251 DEB	0.5923	0.0137	8.449	0.0509	13
36697	FENGYUN 1C DEB	0.0734	0.0093	12.621	0.2787	88
39928	PEGASUS DEB	0.1693	0.0164	12.496	0.2131	71

A ‘*’ indicates that the conjunction was catastrophic (\(\hbox {EMR}\ge 40{,}000\) J/kg)