Asteroids

2023DW help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.495

Aphelion (Q)

1.145

Eccentricity (e)

0.396

Inclination (i)

5.8

deg

Orbit period (P)

271.2

Earth MOID

0.00034

U parameter

5.9

Next Earth close approach

Date

2026-03-16

Nominal distance (from Earth center)

0.1547

23143522

Maximum Brightness

21.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.3

mag

Diameter

40 - 80*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-02-26

Observatory

MAPS, San Pedro de Atacama

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.820062

1-sigma variation

0.000014

Unit

Eccentricity (e)

Value

0.396169

1-sigma variation

0.000060

Unit

Inclination (i)

Value

5.8059

1-sigma variation

0.0012

Unit

Long. of Ascending Node (Ω)

Value

326.0946

1-sigma variation

0.0007

Unit

Arg. of Perihelion (ω)

Value

40.4725

1-sigma variation

0.0013

Unit

Mean Anomaly (M)

Value

7.36664

1-sigma variation

0.02949

Unit

Perihelion distance

Value

0.495179

1-sigma variation

Unit

Aphelion distance

Value

1.144945

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.481761

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001251

1-sigma variation

Unit

MOID

Value

0.000341

1-sigma variation

Unit

Orbit Period

Value

271.2492

1-sigma variation

Unit

U parameter

Value

5.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.95092E-10	-8.39166E-10	-1.67432E-8	-9.91469E-9	1.82964E-8	-4.11954E-7
e	-8.39166E-10	3.60971E-9	7.20237E-8	4.26631E-8	-7.86989E-8	1.77193E-6
i	-1.67432E-8	7.20237E-8	1.43718E-6	8.51879E-7	-1.57040E-6	3.53526E-5
Ω	-9.91469E-9	4.26631E-8	8.51879E-7	5.09009E-7	-9.30577E-7	2.09260E-5
ω	1.82964E-8	-7.86989E-8	-1.57040E-6	-9.30577E-7	1.71672E-6	-3.86347E-5
M	-4.11954E-7	1.77193E-6	3.53526E-5	2.09260E-5	-3.86347E-5	8.69900E-4

Date of computation: 2025-09-10 00:30 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

24.277

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

40 - 80*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

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Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

931

Unit

Source

[1]

Normalized RMS of residuals

Value

0.543069

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-02-26.12762

Unit

Source

[2]

Last Observation

Value

2023-03-19.008886

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

123 (1)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 2023DW from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1951-04-16 09:35	1170.7	0.1465943	0.1432264	0.0011464
EARTH	1954-05-04 15:00	100.1	0.1006248	0.0995003	0.0005180
VENUS	1963-07-29 05:06	117.3	0.0327737	0.0315113	0.0007179
EARTH	1968-02-14 19:34	9.4	0.0481452	0.0408658	0.0024270
EARTH	1971-02-23 03:14	386.7	0.0915207	0.0874481	0.0013579
EARTH	1974-03-21 06:31	367.9	0.1599669	0.1592963	0.0002239
EARTH	1977-04-18 06:35	81.0	0.1430671	0.1430325	0.0000116
EARTH	1980-05-04 10:29	7.8	0.1016130	0.1013721	0.0000849
EARTH	1994-02-14 15:15	68.3	0.0753035	0.0656809	0.0032077
EARTH	1997-02-19 07:26	503.8	0.0707587	0.0629037	0.0026191
EARTH	2000-03-17 03:38	981.9	0.1559301	0.1541141	0.0006078
EARTH	2003-04-16 15:57	789.4	0.1473765	0.1448507	0.0008530
EARTH	2006-05-04 21:08	71.6	0.1003123	0.0999140	0.0002026
EARTH	2009-05-02 20:43	71.3	0.1951190	0.1900529	0.0016972
EARTH	2020-02-15 17:41	14.3	0.1029350	0.1015876	0.0004491
VENUS	2020-10-13 00:52	28.0	0.0406897	0.0398425	0.0002864
EARTH	2023-02-18 12:56	< 1 min	0.0583401	0.0583112	0.0000096
EARTH	2026-03-16 19:47	137.7	0.1547049	0.1543195	0.0001285
EARTH	2029-04-15 18:59	241.8	0.1479642	0.1473218	0.0002151
EARTH	2032-05-04 11:59	27.6	0.1011285	0.1005916	0.0001972
VENUS	2042-04-26 02:08	156.3	0.0321508	0.0303525	0.0011028
EARTH	2046-02-14 13:30	26.3	0.0285680	0.0155458	0.0043408
EARTH	2049-02-25 12:48	450.8	0.1047118	0.1008589	0.0012846
EARTH	2052-03-23 20:40	281.7	0.1626106	0.1625527	0.0000196
EARTH	2055-04-21 11:51	924.5	0.1391769	0.1350053	0.0014225
EARTH	2058-05-05 11:57	38.5	0.1041965	0.1008171	0.0016125
EARTH	2072-02-15 13:38	328.6	0.0871038	0.0458962	0.0137360
EARTH	2075-02-18 13:15	> 1 d	0.0584255	0.0246877	0.0112509
EARTH	2078-03-14 22:43	> 1 d	0.1520973	0.1431874	0.0029980
VENUS	2080-09-29 14:07	677.1	0.0485608	0.0485577	0.0000977
EARTH	2081-04-13 02:34	> 1 d	0.1529541	0.1475773	0.0018587
EARTH	2084-05-04 06:04	300.3	0.1004406	0.1002919	0.0002451
EARTH	2087-05-04 06:10	39.2	0.1793603	0.1729602	0.0021515
EARTH	2098-02-16 00:01	223.1	0.1267756	0.1088045	0.0059904
VENUS	2099-07-13 07:41	441.1	0.0299979	0.0296159	0.0013883
EARTH	2101-02-17 06:30	775.4	0.0348299	0.0082782	0.0088682
EARTH	2104-03-13 17:56	> 1 d	0.1492154	0.1387964	0.0035030
EARTH	2107-04-14 15:27	> 1 d	0.1532644	0.1440228	0.0032732
EARTH	2110-05-06 02:06	423.3	0.1004722	0.1003520	0.0005962
VENUS	2121-01-23 02:42	954.8	0.0387323	0.0290566	0.0128811
EARTH	2124-02-16 07:52	148.4	0.0213916	0.0018233	0.0153077

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
121.15718335	42.99585451	0.00046543	MINIMUM
234.29160234	120.73658847	0.09991850	MINIMUM
182.74935303	85.17981029	0.16313397	SADDLE
356.92671648	261.39680717	0.50862386	SADDLE
356.12861181	80.16915506	1.49216853	SADDLE
177.80989336	261.93585877	2.14564854	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out