Asteroids

2023FM help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.847

Aphelion (Q)

3.467

Eccentricity (e)

0.607

Inclination (i)

12.4

deg

Orbit period (P)

1157.1

Earth MOID

0.02462

U parameter

2.7

Next Earth close approach

Date

2042-04-15

Nominal distance (from Earth center)

0.08706

13024341

Maximum Brightness

19.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.8

mag

Diameter

110 - 260*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-03-16

Observatory

ATLAS Chile, Rio Hurtado

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.156958

1-sigma variation

0.000001

Unit

Eccentricity (e)

Value

0.607376

1-sigma variation

2.026E-7

Unit

Inclination (i)

Value

12.4046

1-sigma variation

5.062E-6

Unit

Long. of Ascending Node (Ω)

Value

191.1129

1-sigma variation

4.210E-6

Unit

Arg. of Perihelion (ω)

Value

61.1844

1-sigma variation

2.071E-5

Unit

Mean Anomaly (M)

Value

347.78376

1-sigma variation

0.00034

Unit

Perihelion distance

Value

0.846873

1-sigma variation

Unit

Aphelion distance

Value

3.467044

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.053941

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.924172

1-sigma variation

Unit

MOID

Value

0.024624

1-sigma variation

Unit

Orbit Period

Value

1157.0736

1-sigma variation

Unit

U parameter

Value

2.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.99795E-12	2.81458E-13	-3.62680E-12	-4.95450E-12	-2.12998E-11	-4.76686E-10
e	2.81458E-13	4.10453E-14	-5.35327E-13	-7.48563E-13	-2.47190E-12	-6.72493E-11
i	-3.62680E-12	-5.35327E-13	2.56286E-11	1.71895E-11	2.42128E-11	8.66644E-10
Ω	-4.95450E-12	-7.48563E-13	1.71895E-11	1.77253E-11	3.13489E-11	1.18538E-9
ω	-2.12998E-11	-2.47190E-12	2.42128E-11	3.13489E-11	4.29034E-10	5.04529E-9
M	-4.76686E-10	-6.72493E-11	8.66644E-10	1.18538E-9	5.04529E-9	1.13738E-7

Date of computation: 2026-03-17 23:26 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

21.834

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

110 - 260*

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

1097

Unit

Source

[1]

Normalized RMS of residuals

Value

0.430759

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-03-16.239889

Unit

Source

[2]

Last Observation

Value

2023-04-07.957759

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

287 (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

2023-04-08

Unit

Source

[3]

Last Observation

Value

2023-04-09

Unit

Source

[3]

Delay (Discarded)

Value

3 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

3 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 2023FM from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	2004-03-31 03:43	10.5	0.0928382	0.0925085	0.0001099
EARTH	2023-04-06 13:08	< 1 s	0.0200600	0.0200600	0.0000000
EARTH	2042-04-15 13:00	18.1	0.0870623	0.0867623	0.0001000
EARTH	2099-08-02 15:51	16.5	0.1914715	0.1913812	0.0000302
EARTH	2118-08-11 07:20	12.4	0.1820988	0.1820524	0.0000156

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
330.81494618	94.30398995	0.02383980	MINIMUM
32.33369062	212.89934886	0.19217832	MINIMUM
6.97216400	164.36585376	0.25265768	SADDLE
1.45125473	332.83856899	1.82424760	SADDLE
180.75708590	330.91748142	2.50707535	SADDLE
179.84879323	150.46925462	4.47011968	MAXIMUM

Download:

MOID Plots

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