Asteroids

2023XM15 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.526

Aphelion (Q)

0.988

Eccentricity (e)

0.305

Inclination (i)

5.8

deg

Orbit period (P)

240.5

Earth MOID

0.00332

U parameter

8.0

Next Earth close approach

Date

2028-01-12

Nominal distance (from Earth center)

0.1752

26209424

Maximum Brightness

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

2023-12-15

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

0.756929

1-sigma variation

0.000290

Unit

Eccentricity (e)

Value

0.304825

1-sigma variation

0.000513

Unit

Inclination (i)

Value

5.7733

1-sigma variation

0.0128

Unit

Long. of Ascending Node (Ω)

Value

273.2526

1-sigma variation

0.0079

Unit

Arg. of Perihelion (ω)

Value

357.1367

1-sigma variation

0.0050

Unit

Mean Anomaly (M)

Value

140.38666

1-sigma variation

0.58990

Unit

Perihelion distance

Value

0.526198

1-sigma variation

Unit

Aphelion distance

Value

0.987659

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.491632

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.003399

1-sigma variation

Unit

MOID

Value

0.003324

1-sigma variation

Unit

Orbit Period

Value

240.5363

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	8.38185E-8	-1.48639E-7	-3.71436E-6	2.27497E-6	-1.44596E-6	-1.70786E-4
e	-1.48639E-7	2.63588E-7	6.58684E-6	-4.03432E-6	2.56420E-6	3.02862E-4
i	-3.71436E-6	6.58684E-6	1.64616E-4	-1.00823E-4	6.40888E-5	7.56822E-3
Ω	2.27497E-6	-4.03432E-6	-1.00823E-4	6.17550E-5	-3.92555E-5	-4.63540E-3
ω	-1.44596E-6	2.56420E-6	6.40888E-5	-3.92555E-5	2.49629E-5	2.94621E-3
M	-1.70786E-4	3.02862E-4	7.56822E-3	-4.63540E-3	2.94621E-3	3.47987E-1

Date of computation: 2025-11-24 16:53 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

24.147

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

Unit

Source

[1]

Unobserved

Value

764

Unit

Source

[1]

Normalized RMS of residuals

Value

0.704571

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-12-15.058071

Unit

Source

[2]

Last Observation

Value

2023-12-31.08067

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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 2023XM15 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	1959-12-02 22:10	> 1 w	0.1904452	0.0465971	6.3210247
EARTH	1961-12-02 19:18	> 1 mo	0.1149761	0.0383264	4.5657735
EARTH	1963-12-08 04:46	> 1 mo	0.0538782	0.0246736	2.4331450
EARTH	1965-12-18 22:56	> 1 mo	0.0169108	0.0065097	0.7940445
EARTH	1967-12-29 00:32	> 1 mo	0.0052678	0.0031572	0.4851660
EARTH	1970-01-10 22:36	> 1 mo	0.0795417	0.0190015	1.0740733
EARTH	1972-01-12 13:09	> 1 w	0.1867142	0.0279639	1.1876657
EARTH	1996-12-01 23:45	> 1 d	0.1390297	0.0438290	0.1192452
EARTH	1998-12-08 18:30	> 1 w	0.0459661	0.0231464	0.0177967
EARTH	2000-12-28 07:09	> 1 w	0.0060137	0.0036403	0.0265468
EARTH	2003-01-12 14:59	966.6	0.1206331	0.0247415	0.0588774
EARTH	2021-12-02 01:49	52.7	0.1630907	0.1445089	0.0062129
EARTH	2023-12-10 16:29	< 1 min	0.0351799	0.0349850	0.0000650
EARTH	2026-01-06 21:55	1103.0	0.0376045	0.0244951	0.0045270
EARTH	2028-01-12 23:27	180.8	0.1751992	0.1418077	0.0111653
EARTH	2046-12-03 02:44	> 1 d	0.1074182	0.0310492	0.0473566
EARTH	2048-12-21 18:42	> 1 w	0.0069776	0.0043662	0.0195342
EARTH	2051-01-09 23:23	> 1 d	0.0637437	0.0486785	0.0050261
EARTH	2053-01-11 22:04	> 1 d	0.1766372	0.0316013	0.0679934
EARTH	2075-12-02 18:45	> 1 d	0.1401111	0.0336002	0.7038011
EARTH	2077-12-09 14:42	> 1 mo	0.0382293	0.0166751	0.5000923
EARTH	2080-01-01 18:52	> 1 mo	0.0179529	0.0071975	0.3832977
EARTH	2082-01-12 10:58	> 1 d	0.1246756	0.0161322	0.2459465
EARTH	2102-12-03 20:35	> 1 mo	0.1742907	0.0346257	3.9802916
EARTH	2104-12-07 18:56	> 1 mo	0.0525309	0.0200966	3.2041218
EARTH	2107-01-01 12:45	> 1 mo	0.0156747	0.0068042	2.0278291
EARTH	2109-01-13 13:26	> 1 w	0.1346988	0.0174991	1.4407664

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
184.55631238	352.53761050	0.00332410	MINIMUM
0.92559681	170.02967908	0.49168702	SADDLE
0.95906362	350.08827631	1.51001928	SADDLE
180.60590279	169.72231229	2.00552171	MAXIMUM

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MOID Plots

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