Origin of the near-Earth asteroid Phaethon and the Geminids meteor shower

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Table 1:

Proper orbital elements and physical parameters for Pallas and 9 Pallas family members classified as B-types.
Ast.	a	e	i	H	$p_{\rm v}$	D
Num.	(AU)		( $^{\circ}$ )			(km)
2	2.771	0.281	33.198	3.93	0.16 $\pm$ 0.01	546.02
531	2.786	0.254	33.055	11.80	0.15 $\pm$ 0.01	15.19
2382	2.759	0.274	32.949	11.12	0.15^a	26.00
3579	2.733	0.283	33.089	13.83	0.15^a	5.88
5222	2.775	0.277	32.688	11.11	0.15 $\pm$ 0.01	21.92
5234	2.760	0.271	33.123	11.98	0.15^a	13.78
5330	2.764	0.261	31.848	11.94	0.22 $\pm$ 0.04	12.00
3200	1.271	0.889	22.184	14.51	0.11 $\pm$ 0.01	5.10
3581^b	2.771	0.409	28.810	12.10	0.15^a	13.04
5690^b	2.804	0.379	28.956	12.50	0.15^a	20.85
6500^b	2.756	0.417	29.282	12.50	0.15^a	10.85

Notes. ^(a) For those objects that do not have IRAS albedo information, we have used the nominal value 0.15. ^(b) Although classified as Mars-crossers, we show in the main text that these 3 asteroids belong in fact to the Pallas family. As in the case of Phaethon, osculating orbital elements have been used.

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