Asteroids

2023SQ help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.600

Aphelion (Q)

1.030

Eccentricity (e)

0.264

Inclination (i)

5.7

deg

Orbit period (P)

268.8

Earth MOID

0.00533

U parameter

5.7

Next Earth close approach

Date

2026-11-08

Nominal distance (from Earth center)

0.18557

27761567

Maximum Brightness

24.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

27 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-09-17

Observatory

ATLAS-HKO, 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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.815141

1-sigma variation

0.000010

Unit

Eccentricity (e)

Value

0.263567

1-sigma variation

0.000019

Unit

Inclination (i)

Value

5.7269

1-sigma variation

0.0005

Unit

Long. of Ascending Node (Ω)

Value

177.4384

1-sigma variation

3.427E-5

Unit

Arg. of Perihelion (ω)

Value

17.3789

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

131.45270

1-sigma variation

0.01825

Unit

Perihelion distance

Value

0.600297

1-sigma variation

Unit

Aphelion distance

Value

1.029985

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.390357

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.008714

1-sigma variation

Unit

MOID

Value

0.005325

1-sigma variation

Unit

Orbit Period

Value

268.8113

1-sigma variation

Unit

U parameter

Value

5.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.01466E-10	-1.91883E-10	-5.31696E-9	3.43959E-10	-2.41349E-9	-1.83879E-7
e	-1.91883E-10	3.62874E-10	1.00551E-8	-6.50479E-10	4.56542E-9	3.47732E-7
i	-5.31696E-9	1.00551E-8	2.78711E-7	-1.80358E-8	1.26535E-7	9.63541E-6
Ω	3.43959E-10	-6.50479E-10	-1.80358E-8	1.17448E-9	-8.19633E-9	-6.23318E-7
ω	-2.41349E-9	4.56542E-9	1.26535E-7	-8.19633E-9	5.78225E-8	4.37307E-6
M	-1.83879E-7	3.47732E-7	9.63541E-6	-6.23318E-7	4.37307E-6	3.33231E-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

24.967

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

27 - 60*

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

751

Unit

Source

[1]

Normalized RMS of residuals

Value

0.486786

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-09-17.337269

Unit

Source

[2]

Last Observation

Value

2023-10-06.257502

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

217 (12)

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 2023SQ 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	1957-10-14 01:19	> 1 mo	0.0477262	0.0418620	0.0419471
EARTH	1968-11-02 20:26	> 1 w	0.0676876	0.0582071	0.0488204
EARTH	1976-09-10 17:52	885.5	0.1022810	0.0127829	0.0869746
EARTH	1979-11-09 01:54	299.9	0.1531054	0.0676363	0.0608654
EARTH	1987-09-17 22:34	1013.1	0.0075252	0.0063426	0.0020191
EARTH	1990-11-08 13:32	69.2	0.1953531	0.1833140	0.0040330
EARTH	1998-09-11 13:07	34.8	0.1524051	0.1454142	0.0023309
EARTH	2001-11-01 20:58	363.6	0.0682084	0.0665186	0.0005908
EARTH	2012-09-24 02:30	391.7	0.0225446	0.0205897	0.0006569
EARTH	2023-09-18 03:02	< 1 s	0.0057557	0.0057544	0.0000005
EARTH	2026-11-08 02:24	5.5	0.1855746	0.1847247	0.0002834
EARTH	2037-10-16 01:36	621.8	0.0545541	0.0534496	0.0003806
EARTH	2048-09-11 19:36	161.1	0.0527009	0.0460545	0.0022197
EARTH	2051-11-08 13:29	55.7	0.1257154	0.1220097	0.0012437
EARTH	2062-09-19 07:32	489.4	0.0081296	0.0054211	0.0011231
EARTH	2073-09-27 18:39	> 1 d	0.0312671	0.0134708	0.0073927
EARTH	2084-10-27 09:58	> 1 d	0.0665276	0.0596956	0.0032297
EARTH	2092-09-10 00:41	49.1	0.1100395	0.0926112	0.0058191
EARTH	2095-11-07 03:58	93.1	0.1621795	0.1489440	0.0044429
EARTH	2103-09-20 21:44	314.6	0.0097568	0.0072325	0.0008693
EARTH	2111-09-11 18:10	225.5	0.0819171	0.0571901	0.0082793
EARTH	2122-11-06 17:45	212.9	0.1258675	0.0891983	0.0134608

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
153.89570318	253.41667861	0.00581929	MINIMUM
7.77980845	101.11665718	0.40255102	SADDLE
6.11183411	278.94055064	1.59825411	SADDLE
182.97816858	95.67460376	2.03073939	MAXIMUM

Download:

MOID Plots

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