NASA / JPL ID: 2276891

Asteroid 276891 2004 RH340 Close Approach

Not flagged as hazardousNASA/JPL page

Notable Pass

Asteroid 276891 2004 RH340 is a near-Earth object catalogued by NASA under reference ID 2276891. Its estimated diameter is 330–738 m (average 534 m), inferred from brightness rather than measured directly. Its closest catalogued approach to Venus occurs on Thu, Apr 4, 2165, missing by 13,471,129 km — 35.03 lunar distances. NASA does not classify it as a potentially hazardous asteroid.

This score ranks how notable the asteroid approach is. It is not an impact prediction.

Closest approach

Approach date

2165-Apr-04 13:00

Miss distance (km)

13,471,129 km

Miss distance (LD)

35.03 LD

Miss distance (AU)

0.0900 AU

Relative velocity

15.5 km/s

Orbitfall Index

31/100

Size and brightness

Diameter range

330–738 m

Average diameter

534 m

Absolute magnitude

19.53

Related close approaches

Date	Orbiting	Miss (km)	Miss (LD)	Velocity (km/s)	Index
08/02/00Thu, Feb 8, 1900	Venus	14,640,762	38.07	16.0	31
26/06/07Wed, Jun 26, 1907	Venus	18,334,790	47.68	15.0	30
11/12/11Mon, Dec 11, 1911	Earth	37,929,143	98.63	20.1	33
10/11/14Tue, Nov 10, 1914	Earth	27,206,567	70.75	17.5	31
26/06/17Tue, Jun 26, 1917	Earth	66,629,945	173.26	13.1	29
01/10/17Mon, Oct 1, 1917	Earth	54,811,951	142.53	17.3	31
05/07/20Mon, Jul 5, 1920	Earth	70,445,109	183.18	17.2	31
29/12/36Tue, Dec 29, 1936	Earth	65,989,696	171.59	24.5	35
03/12/39Sun, Dec 3, 1939	Earth	28,866,712	75.06	18.8	32
14/06/42Sun, Jun 14, 1942	Earth	74,680,518	194.19	13.5	29
30/10/42Fri, Oct 30, 1942	Earth	34,470,497	89.63	17.4	31
02/07/45Mon, Jul 2, 1945	Earth	65,201,484	169.54	13.4	29
15/09/45Sat, Sep 15, 1945	Earth	62,682,226	162.99	16.5	31
17/09/48Fri, Sep 17, 1948	Venus	20,470,387	53.23	17.1	31
02/02/56Thu, Feb 2, 1956	Venus	13,809,744	35.91	15.3	30
24/12/64Thu, Dec 24, 1964	Earth	57,560,520	149.67	23.1	34
27/11/67Mon, Nov 27, 1967	Earth	25,182,906	65.48	18.2	32
18/06/70Thu, Jun 18, 1970	Earth	72,231,204	187.82	13.3	29
23/10/70Fri, Oct 23, 1970	Earth	39,968,091	103.93	17.4	31
05/07/73Thu, Jul 5, 1973	Earth	65,455,136	170.20	13.9	30
30/08/73Thu, Aug 30, 1973	Earth	67,066,043	174.39	14.9	30
16/12/92Wed, Dec 16, 1992	Earth	45,718,572	118.88	21.2	33
17/11/95Fri, Nov 17, 1995	Earth	24,395,691	63.44	17.7	32
23/06/98Tue, Jun 23, 1998	Earth	68,876,635	179.10	13.1	29
11/10/98Sun, Oct 11, 1998	Earth	48,661,077	126.53	17.5	31
07/07/01Sat, Jul 7, 2001	Earth	67,659,195	175.93	15.5	30
09/09/04Thu, Sep 9, 2004	Venus	14,749,198	38.35	16.0	31
25/01/12Wed, Jan 25, 2012	Venus	17,916,813	46.59	15.1	30
11/12/20Fri, Dec 11, 2020	Earth	38,779,174	100.84	20.2	33
11/11/23Sat, Nov 11, 2023	Earth	26,982,666	70.16	17.5	31
27/06/26Sat, Jun 27, 2026	Earth	67,205,989	174.76	13.0	29
02/10/26Fri, Oct 2, 2026	Earth	54,297,103	141.19	17.3	31
07/07/29Sat, Jul 7, 2029	Earth	70,918,581	184.41	17.1	31
30/12/45Sat, Dec 30, 2045	Earth	66,507,937	172.94	24.5	35
03/12/48Thu, Dec 3, 2048	Earth	29,588,411	76.94	18.9	32
31/10/51Tue, Oct 31, 2051	Earth	33,850,129	88.02	17.4	31
18/04/53Fri, Apr 18, 2053	Venus	20,417,500	53.09	17.0	31
03/07/54Fri, Jul 3, 2054	Earth	65,870,967	171.28	13.2	29
17/09/54Thu, Sep 17, 2054	Earth	61,848,270	160.82	16.7	31
02/09/60Thu, Sep 2, 2060	Venus	13,624,964	35.43	15.4	30
25/12/73Mon, Dec 25, 2073	Earth	58,791,839	152.88	23.2	34
27/11/76Fri, Nov 27, 2076	Earth	25,769,826	67.01	18.3	32
19/06/79Mon, Jun 19, 2079	Earth	72,789,763	189.28	13.3	29
24/10/79Tue, Oct 24, 2079	Earth	39,235,813	102.03	17.5	31
06/07/82Mon, Jul 6, 2082	Earth	65,973,639	171.55	13.8	30
03/09/82Thu, Sep 3, 2082	Earth	66,623,434	173.24	15.4	30
19/12/01Mon, Dec 19, 2101	Earth	47,369,498	123.18	21.4	33
19/11/04Wed, Nov 19, 2104	Earth	24,227,271	63.00	17.7	32
25/06/07Sat, Jun 25, 2107	Earth	69,851,909	181.64	13.1	29
15/10/07Sat, Oct 15, 2107	Earth	46,987,221	122.18	17.5	31
12/04/09Fri, Apr 12, 2109	Venus	15,554,454	40.45	16.1	31
10/07/10Thu, Jul 10, 2110	Earth	67,706,866	176.06	15.1	30
26/08/16Wed, Aug 26, 2116	Venus	16,536,006	43.00	15.1	30
14/12/29Wed, Dec 14, 2129	Earth	40,731,614	105.91	20.4	33
13/11/32Thu, Nov 13, 2132	Earth	26,082,062	67.82	17.5	32
29/06/35Wed, Jun 29, 2135	Earth	68,064,248	176.99	13.0	29
06/10/35Thu, Oct 6, 2135	Earth	52,827,369	137.37	17.4	31
10/07/38Thu, Jul 10, 2138	Earth	70,750,999	183.97	16.6	31
02/01/55Thu, Jan 2, 2155	Earth	69,490,392	180.70	25.0	35
19/11/57Sat, Nov 19, 2157	Venus	22,109,237	57.49	17.3	31
06/12/57Tue, Dec 6, 2157	Earth	31,475,276	81.85	19.1	32
04/11/60Tue, Nov 4, 2160	Earth	31,712,127	82.46	17.5	31
04/07/63Mon, Jul 4, 2163	Earth	66,640,069	173.28	13.0	29
24/09/63Sat, Sep 24, 2163	Earth	59,753,278	155.38	17.0	31
04/04/65Thu, Apr 4, 2165	Venus	13,471,129	35.03	15.5	31
19/08/72Wed, Aug 19, 2172	Venus	21,965,416	57.12	15.2	30
29/12/82Sun, Dec 29, 2182	Earth	61,817,245	160.74	23.7	35
01/12/85Thu, Dec 1, 2185	Earth	27,193,595	70.71	18.5	32
19/06/88Thu, Jun 19, 2188	Earth	74,063,654	192.59	13.3	29
27/10/88Mon, Oct 27, 2188	Earth	37,023,270	96.27	17.5	31
08/07/91Fri, Jul 8, 2191	Earth	66,431,370	172.74	13.4	29
11/09/91Sun, Sep 11, 2191	Earth	65,031,514	169.10	16.2	31

Data source

All figures on this page come from NASA's Near Earth Object Web Service, maintained by the Center for Near-Earth Object Studies at JPL. The Orbitfall Index is calculated by Orbitfall from those values — see the methodology and the NASA asteroid tracker overview. For current passes, see asteroids passing Earth today.

Asteroid guide

Learn about close approaches

Asteroids passing Earth today

Today's catalogued close approaches, ranked.

Near-Earth objects today

What counts as a near-Earth object, and today's list.

Asteroid close approaches

What a close approach is and how it's measured.

NASA asteroid tracker

Where the data comes from and how often it updates.

Potentially hazardous asteroids

What NASA's PHA label does and doesn't mean.

Lunar distance explained

1 LD = 384,400 km — the yardstick for flybys.

Close approach explained

Why a close approach is a schedule, not a warning.

How NASA tracks asteroids

From first detection to orbit refinement.