Asteroids

2023XC help

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

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.850

Aphelion (Q)

1.290

Eccentricity (e)

0.206

Inclination (i)

2.5

deg

Orbit period (P)

404.2

Earth MOID

0.00305

U parameter

6.4

Next Earth close approach

Date

2025-05-31

Nominal distance (from Earth center)

0.13649

20418183

Maximum Brightness

27.2

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

28.4

mag

Diameter

6 - 12*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-12-03

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

1.069850

1-sigma variation

0.000059

Unit

Eccentricity (e)

Value

0.205896

1-sigma variation

0.000122

Unit

Inclination (i)

Value

2.4838

1-sigma variation

0.0019

Unit

Long. of Ascending Node (Ω)

Value

251.7079

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

263.1488

1-sigma variation

0.0053

Unit

Mean Anomaly (M)

Value

40.53003

1-sigma variation

0.03038

Unit

Perihelion distance

Value

0.849572

1-sigma variation

Unit

Aphelion distance

Value

1.290128

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.036659

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.013794

1-sigma variation

Unit

MOID

Value

0.003049

1-sigma variation

Unit

Orbit Period

Value

404.1873

1-sigma variation

Unit

U parameter

Value

6.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.42654E-9	7.13415E-9	1.11230E-7	4.66725E-8	3.03151E-7	-1.77795E-6
e	7.13415E-9	1.48835E-8	2.32455E-7	9.74192E-8	6.36734E-7	-3.70371E-6
i	1.11230E-7	2.32455E-7	3.63649E-6	1.52219E-6	1.00026E-5	-5.77718E-5
Ω	4.66725E-8	9.74192E-8	1.52219E-6	6.37793E-7	4.17469E-6	-2.42333E-5
ω	3.03151E-7	6.36734E-7	1.00026E-5	4.17469E-6	2.78526E-5	-1.57664E-4
M	-1.77795E-6	-3.70371E-6	-5.77718E-5	-2.42333E-5	-1.57664E-4	9.22661E-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

28.389

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

6 - 12*

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

[-]

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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

520

Unit

Source

[1]

Normalized RMS of residuals

Value

0.577454

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-12-03.264973

Unit

Source

[2]

Last Observation

Value

2023-12-06.800545

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

24 (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 2023XC 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	1954-11-04 12:18	> 1 mo	0.1810758	0.0355480	0.6723188
EARTH	1955-02-09 08:13	> 1 mo	0.1408333	0.0294004	0.2823246
EARTH	1965-12-03 21:49	> 1 mo	0.1113049	0.0032751	0.7709693
EARTH	1967-05-21 01:35	> 1 mo	0.0690366	0.0011336	0.6172591
EARTH	1977-12-16 20:50	> 1 mo	0.0639657	0.0014935	0.9498868
EARTH	1979-06-04 00:34	> 1 mo	0.1020864	0.0039560	0.9753952
EARTH	1990-03-28 15:38	> 1 mo	0.1409873	0.0338312	0.1241677
EARTH	1990-07-02 09:44	> 1 mo	0.1807758	0.0328150	0.3077712
EARTH	2000-12-12 09:43	> 1 w	0.0336603	0.0039077	0.1254612
EARTH	2002-06-02 15:46	> 1 d	0.0960969	0.0043848	0.1195321
EARTH	2011-12-06 01:29	167.3	0.0779680	0.0442210	0.0112513
EARTH	2013-05-26 23:46	784.4	0.0151825	0.0046705	0.0065177
EARTH	2023-12-08 23:22	< 1 min	0.0053865	0.0053765	0.0000033
EARTH	2025-05-31 02:37	24.2	0.1364871	0.1357268	0.0002534
EARTH	2035-05-03 00:34	> 1 d	0.0917779	0.0792465	0.0041774
EARTH	2044-11-11 19:54	> 1 d	0.1629130	0.1478136	0.0050412
EARTH	2045-01-28 01:06	> 1 d	0.1290595	0.1217396	0.0024431
EARTH	2054-12-03 07:19	397.7	0.0821143	0.0637805	0.0061120
EARTH	2056-05-26 06:19	435.5	0.0470942	0.0338286	0.0044437
EARTH	2066-04-18 23:38	> 1 w	0.1100884	0.0814650	0.0095552
EARTH	2075-10-29 12:21	> 1 w	0.1971841	0.1507408	0.0155602
EARTH	2076-02-15 11:45	> 1 w	0.1422943	0.1299320	0.0041367
EARTH	2085-12-12 22:31	> 1 d	0.0447494	0.0029446	0.0345503
EARTH	2095-12-09 01:54	> 1 d	0.0037526	0.0037318	0.0060119
EARTH	2097-05-31 23:23	> 1 mo	0.1616906	0.0020150	3.5866300
EARTH	2105-12-11 17:11	> 1 mo	0.0247580	0.0037343	24.4882857
EARTH	2116-03-01 10:20	> 1 mo	0.1430744	0.0522233	1.6347435

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
292.62646691	334.65427854	0.00326529	MINIMUM
75.40409392	139.62002164	0.00758690	MINIMUM
4.71274005	57.86966877	0.14582812	SADDLE
183.13695153	236.20514949	0.28468734	SADDLE
4.67098520	237.80132766	1.85838964	SADDLE
182.93907128	56.03113586	2.27900036	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2023XC

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS	TS
2098-05-31.628	87489.628	1.532	0.000	1.50 ± 0.003	8.52E5	5.70E-7	6.13E-9	-8.16	0


Based on 24 optical observations (of which 0 are rejected as outliers) from 2023/12/03.265 to 2023/12/06.801.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 2.14 and 2.14 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20250305 083249.003 UTC.

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Download Impactor Table as: