Asteroids

2023EH1 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.726

Aphelion (Q)

1.442

Eccentricity (e)

0.330

Inclination (i)

5.1

deg

Orbit period (P)

412.3

Earth MOID

0.02155

U parameter

7.5

Next Earth close approach

Date

2038-08-13

Nominal distance (from Earth center)

0.15034

22490676

Maximum Brightness

24.1

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

2023-03-13

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

1.084130

1-sigma variation

0.000290

Unit

Eccentricity (e)

Value

0.330089

1-sigma variation

0.000365

Unit

Inclination (i)

Value

5.1115

1-sigma variation

0.0066

Unit

Long. of Ascending Node (Ω)

Value

173.2978

1-sigma variation

0.0030

Unit

Arg. of Perihelion (ω)

Value

250.9703

1-sigma variation

0.0054

Unit

Mean Anomaly (M)

Value

206.27209

1-sigma variation

0.39215

Unit

Perihelion distance

Value

0.726271

1-sigma variation

Unit

Aphelion distance

Value

1.441990

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.087289

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.133799

1-sigma variation

Unit

MOID

Value

0.021552

1-sigma variation

Unit

Orbit Period

Value

412.3070

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.40869E-8	1.05875E-7	1.91613E-6	-8.79855E-7	1.52766E-6	-1.13715E-4
e	1.05875E-7	1.33551E-7	2.41435E-6	-1.10880E-6	1.90529E-6	-1.43190E-4
i	1.91613E-6	2.41435E-6	4.36777E-5	-2.00569E-5	3.46813E-5	-2.59135E-3
Ω	-8.79855E-7	-1.10880E-6	-2.00569E-5	9.21078E-6	-1.59131E-5	1.18991E-3
ω	1.52766E-6	1.90529E-6	3.46813E-5	-1.59131E-5	2.91245E-5	-2.06520E-3
M	-1.13715E-4	-1.43190E-4	-2.59135E-3	1.18991E-3	-2.06520E-3	1.53783E-1

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

24.997

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

[-]

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

903

Unit

Source

[1]

Normalized RMS of residuals

Value

0.477436

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-03-13.172027

Unit

Source

[2]

Last Observation

Value

2023-03-26.30638

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

28 (2)

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 2023EH1 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	1952-03-01 02:33	409.5	0.0392268	0.0266814	0.0049634
EARTH	1967-08-12 08:43	1290.1	0.1770118	0.1153521	0.0209164
EARTH	1976-08-18 13:10	1407.7	0.0557654	0.0405584	0.0130781
EARTH	1985-08-21 19:11	172.5	0.0415834	0.0394734	0.0010193
EARTH	1994-08-24 10:10	1074.6	0.0610621	0.0446207	0.0069252
EARTH	1996-02-06 06:25	> 1 d	0.1767509	0.1433351	0.0111386
EARTH	1996-02-27 16:18	> 1 d	0.1766015	0.1395954	0.0123725
EARTH	2003-08-29 13:15	> 1 d	0.1053103	0.0573221	0.0178555
EARTH	2005-02-23 10:11	742.8	0.1211901	0.0563942	0.0219819
EARTH	2012-09-14 03:25	> 1 d	0.1641777	0.1177237	0.0161552
EARTH	2014-02-26 09:39	1249.4	0.0550876	0.0215794	0.0199354
EARTH	2023-03-01 13:08	< 1 min	0.0290876	0.0289815	0.0000354
EARTH	2038-08-13 21:59	> 1 d	0.1503409	0.0646041	0.0303759
EARTH	2047-08-29 05:46	> 1 d	0.0981765	0.0411642	0.0328221
EARTH	2049-02-24 01:36	> 1 d	0.1005111	0.0205248	0.0344472
EARTH	2058-03-06 20:58	1146.2	0.1455869	0.0915226	0.0181325
EARTH	2073-08-20 09:20	> 1 d	0.0442676	0.0386438	0.0084980
EARTH	2082-08-26 02:51	> 1 d	0.0724806	0.0402530	0.0192358
EARTH	2084-02-23 18:26	286.9	0.1567332	0.0870720	0.0233432
EARTH	2091-09-01 11:25	1325.7	0.1195313	0.1015437	0.0061011
EARTH	2093-02-24 12:07	254.8	0.1037426	0.0863347	0.0058191
EARTH	2100-09-11 17:20	> 1 d	0.1544326	0.1208415	0.0114365
EARTH	2102-02-27 04:08	847.9	0.0673001	0.0285786	0.0140934
EARTH	2109-09-17 18:10	> 1 w	0.1684844	0.1129644	0.0194133
EARTH	2111-02-28 00:55	> 1 d	0.0528796	0.0206612	0.0227257
EARTH	2118-09-18 12:46	> 1 d	0.1701607	0.1380718	0.0109004
EARTH	2120-02-28 07:31	614.8	0.0527933	0.0282916	0.0090100
VENUS	2122-03-13 23:25	> 1 d	0.0392584	0.0322593	0.0026632

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
75.79798773	56.59653401	0.02167157	MINIMUM
283.42777040	226.71675242	0.03936123	MINIMUM
359.29611951	321.75989905	0.27037642	SADDLE
179.79342107	141.40609229	0.44117044	SADDLE
357.84673381	139.76706889	1.73733945	SADDLE
178.66382216	320.60530731	2.42712586	MAXIMUM

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MOID Plots

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