Asteroids

2023AM help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.044

Aphelion (Q)

3.083

Eccentricity (e)

0.494

Inclination (i)

8.9

deg

Orbit period (P)

1082.6

Earth MOID

0.06288

U parameter

8.3

Next Earth close approach

Date

2109-01-17

Nominal distance (from Earth center)

0.11113

16624465

Maximum Brightness

22.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.5

mag

Diameter

21 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-01-12

Observatory

Mt. Lemmon Survey

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

2.063365

1-sigma variation

0.005062

Unit

Eccentricity (e)

Value

0.494004

1-sigma variation

0.001186

Unit

Inclination (i)

Value

8.9116

1-sigma variation

0.0159

Unit

Long. of Ascending Node (Ω)

Value

110.3677

1-sigma variation

0.0014

Unit

Arg. of Perihelion (ω)

Value

350.6828

1-sigma variation

0.0020

Unit

Mean Anomaly (M)

Value

349.98177

1-sigma variation

1.28778

Unit

Perihelion distance

Value

1.044055

1-sigma variation

Unit

Aphelion distance

Value

3.082676

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.064860

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

2.025684

1-sigma variation

Unit

MOID

Value

0.062879

1-sigma variation

Unit

Orbit Period

Value

1082.5865

1-sigma variation

Unit

U parameter

Value

8.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.56235E-5	6.00198E-6	8.04006E-5	-7.18985E-6	-1.42811E-6	-6.51872E-3
e	6.00198E-6	1.40589E-6	1.88329E-5	-1.68406E-6	-3.37997E-7	-1.52692E-3
i	8.04006E-5	1.88329E-5	2.52292E-4	-2.25564E-5	-4.59639E-6	-2.04542E-2
Ω	-7.18985E-6	-1.68406E-6	-2.25564E-5	2.01951E-6	3.22195E-7	1.82915E-3
ω	-1.42811E-6	-3.37997E-7	-4.59639E-6	3.22195E-7	4.10692E-6	3.62188E-4
M	-6.51872E-3	-1.52692E-3	-2.04542E-2	1.82915E-3	3.62188E-4	1.65838E0

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

25.533

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

21 - 50*

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

975

Unit

Source

[1]

Normalized RMS of residuals

Value

0.931043

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-01-12.38494

Unit

Source

[2]

Last Observation

Value

2023-01-20.28154

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

26 (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 2023AM 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	1952-01-06 12:25	> 1 mo	0.0598747	0.0595371	0.1009231
EARTH	2023-01-08 07:08	1.2	0.0649306	0.0645307	0.0001333
EARTH	2109-01-17 14:38	> 1 mo	0.1111277	0.0515058	1.1198973
EARTH	2111-12-29 07:39	> 1 mo	0.1031598	0.0487006	0.9312961

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
2.94286363	3.85236345	0.06292457	MINIMUM
359.76093248	178.53443043	2.06031177	SADDLE
179.79654982	178.79361263	2.06684604	SADDLE
180.08347818	358.95974684	4.06608302	MAXIMUM

Download:

MOID Plots

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