Asteroids

2023EH2 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.695

Aphelion (Q)

3.305

Eccentricity (e)

0.653

Inclination (i)

6.7

deg

Orbit period (P)

1033.1

Earth MOID

0.00210

U parameter

0.8

Next Earth close approach

Date

2040-02-16

Nominal distance (from Earth center)

0.14553

21770255

Maximum Brightness

23.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.1

mag

Diameter

40 - 90*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-03-14

Observatory

University of Arizona 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.000051

1-sigma variation

7.182E-8

Unit

Eccentricity (e)

Value

0.652658

1-sigma variation

1.090E-7

Unit

Inclination (i)

Value

6.6632

1-sigma variation

4.517E-5

Unit

Long. of Ascending Node (Ω)

Value

342.2754

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

102.9951

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

71.49277

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.694703

1-sigma variation

Unit

Aphelion distance

Value

3.305399

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.336922

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.009965

1-sigma variation

Unit

MOID

Value

0.002095

1-sigma variation

Unit

Orbit Period

Value

1033.1418

1-sigma variation

Unit

U parameter

Value

0.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.15877E-15	-7.79733E-15	1.69636E-12	1.42884E-12	-1.94064E-12	-7.36035E-13
e	-7.79733E-15	1.18792E-14	-2.43168E-12	-1.87632E-12	2.66245E-12	1.10815E-12
i	1.69636E-12	-2.43168E-12	2.04019E-9	3.63025E-9	-3.57804E-9	-3.05848E-10
Ω	1.42884E-12	-1.87632E-12	3.63025E-9	7.28450E-9	-6.92137E-9	-3.53373E-10
ω	-1.94064E-12	2.66245E-12	-3.57804E-9	-6.92137E-9	6.74136E-9	3.79654E-10
M	-7.36035E-13	1.10815E-12	-3.05848E-10	-3.53373E-10	3.79654E-10	1.21889E-10

Date of computation: 2026-07-30 14:25 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

24.139

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

40 - 90*

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

926

Unit

Source

[1]

Unobserved

Value

313

Unit

Source

[1]

Normalized RMS of residuals

Value

0.524016

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-03-14.237241

Unit

Source

[2]

Last Observation

Value

2025-09-25.481366

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

51 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2023EH2 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	1950-03-12 10:29	11.5	0.1932828	0.1928164	0.0001555
EARTH	1952-09-29 21:33	9.4	0.0438642	0.0438237	0.0000138
EARTH	1966-10-17 08:09	7.3	0.1759160	0.1758251	0.0000303
VENUS	1969-09-30 02:25	4.0	0.0406095	0.0406009	0.0000029
EARTH	2023-03-02 19:21	< 1 min	0.0074031	0.0074030	0.0000001
EARTH	2025-09-30 00:29	< 1 min	0.0507296	0.0507289	0.0000002
EARTH	2040-02-16 12:27	< 1 min	0.1455252	0.1455102	0.0000050
EARTH	2042-09-19 17:46	< 1 min	0.1934259	0.1934109	0.0000050
EARTH	2105-03-12 19:14	< 1 min	0.1585807	0.1585756	0.0000017
EARTH	2107-10-13 22:40	< 1 min	0.1365053	0.1365046	0.0000002
EARTH	2122-03-11 06:52	< 1 min	0.1284924	0.1284817	0.0000036
EARTH	2124-10-12 05:51	< 1 min	0.1234370	0.1234250	0.0000040

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
39.39636000	56.05217988	0.00209506	MINIMUM
319.31282594	263.72900906	0.05019704	MINIMUM
358.84748029	338.91464501	0.30471529	SADDLE
359.33519538	159.97608754	1.70790934	SADDLE
179.80145125	160.76486170	2.29888600	SADDLE
179.93666002	340.83054653	4.28493830	MAXIMUM

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MOID Plots

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