NASA / JPL ID: 3869329

Asteroid 2019 SW5 Close Approach

Not flagged as hazardousNASA/JPL page

Close Watch

Asteroid 2019 SW5 is a near-Earth object catalogued by NASA under reference ID 3869329. Its estimated diameter is 25–55 m (average 40 m), inferred from brightness rather than measured directly. Its closest catalogued approach to Earth occurs on Thu, Sep 26, 2019, missing by 737,188 km — 1.92 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

2019-Sep-26 07:54

Miss distance (km)

737,188 km

Miss distance (LD)

1.92 LD

Miss distance (AU)

0.0049 AU

Relative velocity

14.6 km/s

Orbitfall Index

57/100

Size and brightness

Diameter range

25–55 m

Average diameter

40 m

Absolute magnitude

25.15

Related close approaches

Date	Orbiting	Miss (km)	Miss (LD)	Velocity (km/s)	Index
16/08/30Sat, Aug 16, 1930	Earth	33,472,096	87.04	11.3	19
21/09/37Tue, Sep 21, 1937	Earth	6,278,429	16.33	13.6	28
04/10/44Wed, Oct 4, 1944	Earth	19,531,362	50.79	17.9	22
15/10/51Mon, Oct 15, 1951	Earth	48,093,786	125.06	23.1	25
29/04/77Fri, Apr 29, 1977	Earth	69,416,137	180.50	25.3	26
17/02/84Fri, Feb 17, 1984	Mars	13,337,493	34.68	11.6	19
08/05/84Tue, May 8, 1984	Earth	45,817,948	119.14	19.7	23
20/05/91Mon, May 20, 1991	Earth	32,465,640	84.42	14.3	21
05/08/05Fri, Aug 5, 2005	Earth	36,570,885	95.10	11.4	19
09/09/12Sun, Sep 9, 2012	Earth	20,679,196	53.77	11.7	19
26/09/19Thu, Sep 26, 2019	Moon	927,085	2.41	15.3	56
26/09/19Thu, Sep 26, 2019	Earth	737,188	1.92	14.6	57
03/10/26Sat, Oct 3, 2026	Earth	15,214,652	39.56	17.2	22
10/10/33Mon, Oct 10, 2033	Earth	33,974,400	88.34	20.5	24
17/10/40Wed, Oct 17, 2040	Earth	53,916,881	140.20	24.2	26
24/10/47Thu, Oct 24, 2047	Earth	73,392,148	190.84	27.9	27
05/05/80Sun, May 5, 2080	Earth	55,811,808	145.13	22.0	24
14/05/87Wed, May 14, 2087	Earth	40,071,828	104.20	17.6	22
23/05/94Sun, May 23, 2094	Earth	33,386,734	86.82	13.4	20
20/09/22Sun, Sep 20, 2122	Earth	10,243,879	26.64	13.0	20
28/09/29Wed, Sep 28, 2129	Earth	2,346,302	6.10	14.9	49

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.