The following is a list of comets with a very high eccentricity (generally 0.99 or higher) and a period of over 1,000 years that do not quite have a high enough velocity to escape the Solar System. Often, these comets, due to their extreme semimajor axes and eccentricity, will have small orbital interactions with planets and minor planets, most often ending up with the comets fluctuating significantly in their orbital path. These comets probably come from the Oort cloud, a cloud of comets orbiting the Sun from ~10,000 to roughly 50,000 AU. The actual orbit of these comets significantly differs from the provided coordinates. A Solar System barycentric orbit computed at an epoch when the object is located beyond all the planets is a more accurate measurement of its long-term orbit.

List of near-parabolic comets

Zdroj:https://en.wikipedia.org?pojem=List_of_non-periodic_comets
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Comet designation	Name/ discoverer(s)	Period (years)	e	a (AU)	q (AU)	i (°)	Abs. mag (M1)	Perihelion date	Ref
C/1680 V1	Great Comet of 1680	9370	0.999986	444.4285	0.006222	60.6784		1680/12/18	MPC · JPL
C/1769 P1	Messier	2090	0.999249	163.4554	0.122755	40.7338		1769/10/08	MPC · JPL
C/1785 E1	Méchain	1325	0.99646	120.6893	0.42724	92.639		1785/04/08	MPC · JPL
C/1807 R1	Great comet of 1807	1710	0.995488	143.2012	0.646124	63.1762		1807/09/19	MPC · JPL
C/1811 F1	Great Comet of 1811	3100	0.995125	212.3922	1.035412	106.9342		1811/09/12	MPC · JPL
C/1822 N1	Pons	5480	0.996316	310.8303	1.145099	127.3429		1822/10/24	MPC · JPL
C/1823 Y1	Great Comet of 1823	2300	0.9987	170	0.2252	103.68		1823/12/09	MPC · JPL
C/1825 K1	Gambart	3870	0.996395	246.605	0.889011	123.3414		1825/05/31	MPC · JPL
C/1825 N1	Pons	4480	0.995431	271.5793	1.240846	146.4353		1825/12/11	MPC · JPL
C/1826 P1	Pons	6270	0.997492	340.063	0.852878	25.9496		1826/10/09	MPC · JPL
C/1840 B1	Galle	2430	0.99325	180.8076	1.220451	120.7807		1840/03/13	MPC · JPL
C/1844 N1	Mauvais	208900	0.999757	3520.1687	0.855401	131.4092		1844/10/17	MPC · JPL
C/1844 Y1	Great Comet of 1844	6800	0.999302	358.9355	0.250537	45.5651		1844/12/14	MPC · JPL
C/1846 B1	de Vico	2720	0.992403	194.9063	1.480703	47.4257		1846/01/22	MPC · JPL
C/1847 C1	Hind	10300	0.99991	473.2556	0.042593	48.6636		1847/03/30	MPC · JPL
C/1847 N1	Mauvais	44280	0.998589	1251.6357	1.766058	96.5817		1847/08/09	MPC · JPL
C/1849 G1	Schweizer	13560	0.998427	568.5696	0.89436	66.9587		1849/06/08	MPC · JPL
C/1850 J1	Petersen	21450	0.998599	771.8979	1.081429	68.1848		1850/07/24	MPC · JPL
C/1854 R1	Klinkerfues	1290	0.993246	118.2650	0.798762	40.9201		1854/10/28	MPC · JPL
C/1854 Y1	Winnecke-Dien	1960	0.991309	156.4219	1.359463	14.152		1854/12/16	MPC · JPL
C/1857 Q1	Klinkerfues	2460	0.996913	182.3447	0.562898	123.9614		1857/10/01	MPC · JPL
C/1858 L1	Donati	1950	0.996295	156.132	0.578469	116.9512		1858/09/30	MPC · JPL
C/1863 G1	Klinkerfues	45260	0.999159	1269.962	1.068038	112.6209		1863/04/05	MPC · JPL
C/1863 G2	Respighi	17840	0.999079	682.7155	0.628781	85.4961		1863/04/21	MPC · JPL
C/1863 V1	Tempel	15820	0.998879	630.1632	0.706413	78.0817		1863/11/09	MPC · JPL
C/1864 N1	Tempel	3930	0.996351	249.1888	0.90929	178.1269		1864/08/16	MPC · JPL
C/1864 O1	Donati-Toussaint	55240	0.999358	1450.486	0.931212	109.7124		1864/10/11	MPC · JPL
C/1871 G1	Winnecke	5180	0.997814	299.3138	0.6543	87.6034		1871/06/11	MPC · JPL
C/1871 V1	Tempel	2050	0.995714	161.2851	0.691268	98.2992		1871/12/20	MPC · JPL
C/1873 Q1	Borrelly	3390	0.996482	225.7138	0.794061	95.9662		1873/09/11	MPC · JPL
C/1873 Q2	Henry	53830	0.99973	1425.6037	0.384913	121.4625		1873/10/02	MPC · JPL
C/1874 H1	Coggia	13710	0.99882	572.6966	0.675782	66.3439		1874/07/07	MPC · JPL
C/1874 O1	Borrelly	24370	0.998831	840.5894	0.982649	41.8266		1874/08/27	MPC · JPL
C/1877 G1	Winnecke	19750	0.9987	730.7538	0.94998	121.1548		1877/04/18	MPC · JPL
C/1877 G2	Swift	10700	0.997923	485.8223	1.009053	77.1916		1877/04/27	MPC · JPL
C/1881 K1	Great Comet of 1881	2390	0.99589	178	0.734547	63.4253		1881/06/16	MPC · JPL
C/1881 W1	Swift	2740	0.990169	195.8064	1.924973	144.8016		1881/11/20	MPC · JPL
C/1882 F1	Wells	1019140	0.999994	10127.1667	0.060763	73.7977		1882/06/11	MPC · JPL
C/1887 J1	Barnard	7640	0.996093	356.7476	1.393813	17.5479		1887/06/17	MPC · JPL
C/1888 D1	Sawerthal	2200	0.995874	169.3582	0.698772	42.2482		1888/03/17	MPC · JPL
C/1888 P1	Brooks	971160	0.999908	9806.8043	0.902226	74.1904		1888/07/31	MPC · JPL
C/1888 U1	Barnard	2400	0.991488	179.494	1.527853	56.3425		1888/09/13	MPC · JPL
C/1889 G1	Barnard	1379700	0.999818	12393.3846	2.255596	163.8517		1889/06/11	MPC · JPL
C/1889 O1	Davidson	9080	0.997611	435.2118	1.039721	65.9916		1889/07/19	MPC · JPL
C/1890 O2	Denning	61030	0.999187	1550.0898	1.260223	98.9373		1890/09/25	MPC · JPL
C/1890 V1	Zona	11040	0.995872	495.8077	2.046694	154.307		1890/08/07	MPC · JPL
C/1892 E1	Swift	23020	0.998731	809.1663	1.026832	38.7002		1892/04/07	MPC · JPL
C/1893 N1	Rordame-Quénisset	44150	0.99946	1249.1648	0.674549	159.9804		1893/07/07	MPC · JPL
C/1893 U1	Brooks	3520	0.996489	231.2706	0.811991	129.8233		1893/09/19	MPC · JPL
C/1898 V1	Chase	315460	0.999507	4634.0588	2.2846	22.5046		1898/09/20	MPC · JPL
C/1902 R1	Perrine	1403170	0.999968	12533.5625	0.4011	156.3548		1902/11/24	MPC · JPL
C/1903 A1	Giacobini	43880	0.99967	1244.1242	0.4106	30.9416		1903/03/16	MPC · JPL
C/1906 B1	Brooks	84552.21	0.999327	1926.3913	1.296	126.4425	7.0	1905/12/22	MPC · JPL
C/1907 L2	Daniel	8750	0.998794	424.6874	0.512173	8.9577		1907/09/04	MPC · JPL
C/1909 L1	Borrelly-Daniel	2040	0.994762	160.9095	0.842844	52.0803		1909/06/05	MPC · JPL
C/1910 A1	Great January comet of 1910	4142890	0.999995	25795	0.128975	138.7812		1910/01/17	MPC · JPL
C/1910 P1	Metcalf	940030	0.999797	9596.1232	1.948013	121.0556		1910/09/16	MPC · JPL
C/1911 N1	Kiess	2500	0.9963	184	0.68383	148.42		1911/06/30	MPC · JPL
C/1911 O1	Brooks	2090	0.997005	163.1454	0.489429	16.4153589		1911/10/28	MPC · JPL
C/1911 S2	Quénisset	8910	0.998167	429.6907	0.787623	108.1		1911/11/12	MPC · JPL
C/1913 J1	Schaumasse	5436	0.995288	309.1747	1.456831	152.3673		1913/05/15	MPC · JPL
C/1913 R1	Metcalf	13100	0.99756	555.7869	1.35612	143.3547		1913/09/14	MPC · JPL
C/1914 S1	Campbell?	12350	0.998666	534.2999	0.712756	77.836		1914/08/05	MPC · JPL
C/1916 G1	Wolf	150900	0.999405	2834.363	1.686446	25.6592		1917/06/17	MPC · JPL
C/1920 X1	Skjellerup	2700	0.994081	193.9334	1.147892	22.0303		1920/12/11	MPC · JPL
C/1922 B1	Reid	1400	0.986968	125.0064	1.629083	32.4456		1921/10/28	MPC · JPL
C/1922 W1	Skjellerup	1790	0.993735	147.4206	0.92359	23.3659		1923/01/04	MPC · JPL
C/1924 F1	Reid	44320	0.998598	1252.2789	1.755695	72.3273		1924/03/13	MPC · JPL
C/1925 F2	Reid	6120	0.995116	334.418	1.633299	26.9797		1925/07/29	MPC · JPL
C/1926 B1	Blathwayt	2350	0.992384	176.6645	1.345477	128.2986		1926/01/02	MPC · JPL
C/1927 E1	Stearns	90990	0.998179	2023.0104	3.683902	87.6525		1927/03/22	MPC · JPL
C/1927 X1	Skjellerup-Maristany	36530	0.99984	1100.9813	0.176157	85.1126