Asteroids

2023AT help

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

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.958

Aphelion (Q)

1.612

Eccentricity (e)

0.254

Inclination (i)

9.2

deg

Orbit period (P)

532.1

Earth MOID

0.02908

U parameter

7.3

Next Earth close approach

Date

2039-02-27

Nominal distance (from Earth center)

0.1426

21332839

Maximum Brightness

26.3

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

2023-01-13

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

1.285090

1-sigma variation

0.000351

Unit

Eccentricity (e)

Value

0.254492

1-sigma variation

0.000215

Unit

Inclination (i)

Value

9.2498

1-sigma variation

0.0066

Unit

Long. of Ascending Node (Ω)

Value

112.8262

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

47.0465

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

181.67154

1-sigma variation

0.21923

Unit

Perihelion distance

Value

0.958044

1-sigma variation

Unit

Aphelion distance

Value

1.612135

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.040416

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.437820

1-sigma variation

Unit

MOID

Value

0.029085

1-sigma variation

Unit

Orbit Period

Value

532.1066

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.23010E-7	7.55294E-8	2.32915E-6	7.17443E-8	-1.14835E-7	-7.68886E-5
e	7.55294E-8	4.63772E-8	1.43009E-6	4.40513E-8	-6.99390E-8	-4.72108E-5
i	2.32915E-6	1.43009E-6	4.41050E-5	1.35856E-6	-2.19075E-6	-1.45585E-3
Ω	7.17443E-8	4.40513E-8	1.35856E-6	4.18750E-8	-6.72191E-8	-4.48445E-5
ω	-1.14835E-7	-6.99390E-8	-2.19075E-6	-6.72191E-8	3.62914E-7	7.16477E-5
M	-7.68886E-5	-4.72108E-5	-1.45585E-3	-4.48445E-5	7.16477E-5	4.80602E-2

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

27.081

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

[-]

Download this part as:

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

896

Unit

Source

[1]

Normalized RMS of residuals

Value

0.575213

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-01-13.354756

Unit

Source

[2]

Last Observation

Value

2023-01-20.042

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

32 (0)

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 2023AT 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	1953-04-18 05:34	> 1 w	0.1748790	0.1632120	0.0257687
EARTH	1972-01-14 18:22	> 1 d	0.0786567	0.0250836	0.0247101
EARTH	1988-01-25 16:58	> 1 w	0.0531144	0.0255559	0.0592783
EARTH	2004-04-25 08:15	> 1 d	0.1901224	0.1653082	0.0224171
EARTH	2023-01-20 03:59	< 1 min	0.0294560	0.0293895	0.0000221
EARTH	2039-02-27 20:16	> 1 w	0.1426012	0.0789442	0.0267777
EARTH	2058-01-08 03:15	> 1 d	0.1834582	0.0178755	0.0773947
EARTH	2074-01-21 11:17	> 1 d	0.0319068	0.0299260	0.0224808
EARTH	2090-04-24 02:53	> 1 mo	0.1763516	0.1632794	0.2082162
EARTH	2109-01-20 09:24	> 1 mo	0.0324384	0.0306142	0.3107425
EARTH	2125-02-08 04:36	> 1 mo	0.1083903	0.0032153	6.2897595

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
328.76001022	17.74601111	0.02981147	MINIMUM
186.55120875	243.23258152	0.62403946	SADDLE
4.88503696	243.04849414	1.96238014	SADDLE
180.87179703	58.80931040	2.59840526	MAXIMUM

Download:

MOID Plots

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