Asteroids

2023EJ1 help

Last update: 2025-02-19 13:28 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.780

Aphelion (Q)

1.123

Eccentricity (e)

0.180

Inclination (i)

9.3

deg

Orbit period (P)

339.1

Earth MOID

0.01213

U parameter

4.5

Next Earth close approach

Date

2036-03-09

Nominal distance (from Earth center)

0.01729

2587224

Maximum Brightness

21.7

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

28.7

mag

Diameter

5 - 11*

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.951679

1-sigma variation

0.000002

Unit

Eccentricity (e)

Value

0.180359

1-sigma variation

0.000144

Unit

Inclination (i)

Value

9.3309

1-sigma variation

0.0090

Unit

Long. of Ascending Node (Ω)

Value

352.2822

1-sigma variation

1.432E-5

Unit

Arg. of Perihelion (ω)

Value

60.2562

1-sigma variation

0.0027

Unit

Mean Anomaly (M)

Value

212.12758

1-sigma variation

0.01913

Unit

Perihelion distance

Value

0.780035

1-sigma variation

Unit

Aphelion distance

Value

1.123323

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.160222

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.017063

1-sigma variation

Unit

MOID

Value

0.012129

1-sigma variation

Unit

Orbit Period

Value

339.1051

1-sigma variation

Unit

U parameter

Value

4.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.75124E-12	3.40457E-11	1.20211E-9	-2.56638E-11	2.83526E-9	-1.30904E-8
e	3.40457E-11	2.07755E-8	1.29586E-6	-4.23967E-10	3.55525E-7	-2.69489E-6
i	1.20211E-9	1.29586E-6	8.16129E-5	-1.58946E-8	2.13120E-5	-1.65911E-4
Ω	-2.56638E-11	-4.23967E-10	-1.58946E-8	2.05062E-10	-2.31996E-8	1.05622E-7
ω	2.83526E-9	3.55525E-7	2.13120E-5	-2.31996E-8	7.46124E-6	-5.06158E-5
M	-1.30904E-8	-2.69489E-6	-1.65911E-4	1.05622E-7	-5.06158E-5	3.65976E-4

Date of computation: 2025-02-19 13:28 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

28.678

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

5 - 11*

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

790

Unit

Source

[1]

Normalized RMS of residuals

Value

0.530522

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-03-13.288538

Unit

Source

[2]

Last Observation

Value

2023-03-15.18623

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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 2023EJ1 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	1956-04-09 04:48	165.8	0.1543886	0.1532712	0.0003727
EARTH	1956-09-30 09:56	88.2	0.1924876	0.1922209	0.0000889
EARTH	1969-03-09 19:27	3.3	0.0479345	0.0463237	0.0005379
EARTH	1970-08-21 23:18	151.9	0.1239733	0.1235255	0.0001504
EARTH	1983-03-12 21:46	114.7	0.0505187	0.0480357	0.0008302
EARTH	1984-08-02 17:30	266.1	0.1253622	0.1242731	0.0003857
EARTH	1996-03-12 23:32	33.3	0.1894213	0.1869328	0.0008295
EARTH	1997-04-25 15:44	598.4	0.1798275	0.1790995	0.0002445
EARTH	1997-09-19 19:13	759.0	0.1734551	0.1717563	0.0005731
EARTH	2010-03-10 17:23	14.4	0.0183778	0.0177450	0.0002144
EARTH	2011-08-03 07:54	145.3	0.1255362	0.1252173	0.0001113
EARTH	2023-03-10 12:11	< 1 min	0.0127355	0.0127006	0.0000116
EARTH	2024-08-04 06:46	125.5	0.1234580	0.1233697	0.0000319
EARTH	2036-03-09 23:11	12.0	0.0172945	0.0167490	0.0001851
EARTH	2037-07-30 02:08	125.1	0.1362533	0.1357134	0.0001838
EARTH	2049-04-29 05:08	641.9	0.1828376	0.1819227	0.0003065
EARTH	2049-09-11 06:11	715.1	0.1625804	0.1610547	0.0005168
EARTH	2061-03-10 21:22	93.6	0.0298355	0.0264232	0.0011540
EARTH	2062-07-24 23:40	130.7	0.1567805	0.1552811	0.0005084
EARTH	2073-03-10 05:24	133.3	0.0142091	0.0114288	0.0018230
EARTH	2074-07-22 16:30	824.2	0.1660726	0.1566410	0.0033189
EARTH	2085-04-27 10:34	> 1 w	0.1791514	0.1499319	0.0122002
EARTH	2085-09-06 11:07	> 1 w	0.1591763	0.1464973	0.0112494
EARTH	2096-03-09 13:21	915.4	0.0159477	0.0111852	0.0366345
EARTH	2097-07-28 01:23	> 1 d	0.1439566	0.1254606	0.0273328
EARTH	2108-03-10 14:22	713.6	0.0145209	0.0108066	0.0239519
EARTH	2109-08-02 11:24	> 1 d	0.1330073	0.1221500	0.0195436
EARTH	2121-04-15 08:20	> 1 mo	0.1652583	0.1045546	0.0953257
EARTH	2121-09-18 22:59	> 1 mo	0.1708611	0.1536431	0.0659570

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
106.93789270	66.43808843	0.01275757	MINIMUM
275.49906268	216.70868146	0.11909620	MINIMUM
197.02057186	144.15309576	0.19564018	SADDLE
8.70092306	321.62743390	0.24464522	SADDLE
356.66456819	127.31891729	1.78620050	SADDLE
174.30613000	304.84703430	2.10777538	MAXIMUM

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MOID Plots

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