Asteroids

2023SW help

Last update: 2025-04-09 08:00 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.590

Aphelion (Q)

1.268

Eccentricity (e)

0.365

Inclination (i)

14.5

deg

Orbit period (P)

327.1

Earth MOID

0.00348

U parameter

5.9

Next Earth close approach

Date

2040-09-20

Nominal distance (from Earth center)

0.10826

16195790

Maximum Brightness

24.6

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.1

mag

Diameter

10 - 23*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-09-18

Observatory

Pan-STARRS 2, Haleakala

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.929140

1-sigma variation

0.000022

Unit

Eccentricity (e)

Value

0.364988

1-sigma variation

0.000088

Unit

Inclination (i)

Value

14.4610

1-sigma variation

0.0048

Unit

Long. of Ascending Node (Ω)

Value

177.2370

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

303.7366

1-sigma variation

0.0009

Unit

Mean Anomaly (M)

Value

208.08199

1-sigma variation

0.01079

Unit

Perihelion distance

Value

0.590016

1-sigma variation

Unit

Aphelion distance

Value

1.268265

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.325885

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.006202

1-sigma variation

Unit

MOID

Value

0.003484

1-sigma variation

Unit

Orbit Period

Value

327.1301

1-sigma variation

Unit

U parameter

Value

5.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.92583E-10	1.95362E-9	1.06997E-7	-1.75271E-9	-2.08709E-8	-2.39381E-7
e	1.95362E-9	7.75047E-9	4.24483E-7	-6.95395E-9	-8.27039E-8	-9.49199E-7
i	1.06997E-7	4.24483E-7	2.32486E-5	-3.80870E-7	-4.52954E-6	-5.19863E-5
Ω	-1.75271E-9	-6.95395E-9	-3.80870E-7	6.24131E-9	7.41786E-8	8.51531E-7
ω	-2.08709E-8	-8.27039E-8	-4.52954E-6	7.41786E-8	8.86578E-7	1.01491E-5
M	-2.39381E-7	-9.49199E-7	-5.19863E-5	8.51531E-7	1.01491E-5	1.16350E-4

Date of computation: 2025-04-09 08:00 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

27.097

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

10 - 23*

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

620

Unit

Source

[1]

Normalized RMS of residuals

Value

0.564381

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-09-13.336691

Unit

Source

[2]

Last Observation

Value

2023-09-21.25988

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

53 (7)

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 2023SW 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	1957-09-17 05:50	383.6	0.1368378	0.1143557	0.0074950
VENUS	1972-04-29 13:10	347.1	0.0262288	0.0158142	0.0035447
EARTH	1974-09-20 22:24	8.1	0.0079925	0.0070588	0.0003140
EARTH	1982-09-20 21:13	87.4	0.0931846	0.0860030	0.0023942
EARTH	1990-09-11 21:16	681.2	0.1994236	0.1899583	0.0031588
EARTH	2007-09-16 06:34	47.5	0.1802205	0.1763937	0.0012756
EARTH	2015-09-20 14:29	69.2	0.0435405	0.0386851	0.0016196
VENUS	2016-01-03 10:16	225.2	0.0303830	0.0236013	0.0022982
EARTH	2023-09-21 09:49	< 1 s	0.0051380	0.0051334	0.0000015
EARTH	2040-09-20 02:55	156.0	0.1082622	0.0992095	0.0030185
EARTH	2049-09-17 13:56	161.7	0.1287534	0.1179790	0.0035916
EARTH	2066-09-20 12:00	50.6	0.0357676	0.0302986	0.0018243
EARTH	2083-09-18 06:38	335.4	0.1231713	0.1013357	0.0072796
EARTH	2091-09-19 23:33	657.8	0.1243510	0.0985649	0.0086055
EARTH	2108-09-22 04:36	4.5	0.0392063	0.0269092	0.0041167
VENUS	2112-08-09 00:19	17.4	0.0451849	0.0442370	0.0003161
EARTH	2125-09-20 10:42	1167.4	0.1291483	0.0865894	0.0142279

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
256.98137175	256.98229245	0.00359398	MINIMUM
85.94045953	124.87448376	0.21422919	MINIMUM
166.78912777	190.93413416	0.35453776	SADDLE
351.84387287	7.59604373	0.42818847	SADDLE
358.63169197	197.41580605	1.59747588	SADDLE
182.67318186	22.09572172	2.24013917	MAXIMUM

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MOID Plots

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