Asteroids

2023XO15 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.921

Aphelion (Q)

1.124

Eccentricity (e)

0.099

Inclination (i)

5.3

deg

Orbit period (P)

377.5

Earth MOID

0.02444

U parameter

6.2

Next Earth close approach

Date

2026-07-10

Nominal distance (from Earth center)

0.1634

24444846

Maximum Brightness

24.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.7

mag

Diameter

19 - 40*

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.022291

1-sigma variation

0.000043

Unit

Eccentricity (e)

Value

0.099006

1-sigma variation

0.000122

Unit

Inclination (i)

Value

5.3321

1-sigma variation

0.0072

Unit

Long. of Ascending Node (Ω)

Value

82.9067

1-sigma variation

0.0015

Unit

Arg. of Perihelion (ω)

Value

108.1594

1-sigma variation

0.0124

Unit

Mean Anomaly (M)

Value

46.43916

1-sigma variation

0.05561

Unit

Perihelion distance

Value

0.921078

1-sigma variation

Unit

Aphelion distance

Value

1.123504

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.059933

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.033729

1-sigma variation

Unit

MOID

Value

0.024436

1-sigma variation

Unit

Orbit Period

Value

377.5377

1-sigma variation

Unit

U parameter

Value

6.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.81583E-9	5.18017E-9	3.07013E-7	6.47145E-8	5.25353E-7	-2.36941E-6
e	5.18017E-9	1.47819E-8	8.76287E-7	1.84748E-7	1.50121E-6	-6.76130E-6
i	3.07013E-7	8.76287E-7	5.19638E-5	1.09572E-5	8.91252E-5	-4.00844E-4
Ω	6.47145E-8	1.84748E-7	1.09572E-5	2.31104E-6	1.88082E-5	-8.45088E-5
ω	5.25353E-7	1.50121E-6	8.91252E-5	1.88082E-5	1.53646E-4	-6.86785E-4
M	-2.36941E-6	-6.76130E-6	-4.00844E-4	-8.45088E-5	-6.86785E-4	3.09275E-3

Date of computation: 2026-03-17 23:26 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

25.728

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

19 - 40*

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

869

Unit

Source

[1]

Normalized RMS of residuals

Value

0.606074

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-12-15.27384

Unit

Source

[2]

Last Observation

Value

2023-12-31.282277

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

44 (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

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 2023XO15 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	1965-01-07 08:23	539.4	0.0816971	0.0460501	0.0167299
EARTH	1965-11-27 02:05	> 1 w	0.1134438	0.0800447	0.0145069
EARTH	1966-04-20 02:07	> 1 w	0.1107432	0.0964594	0.0088092
EARTH	1966-09-10 03:35	> 1 mo	0.1492310	0.1289710	0.0067755
EARTH	1967-07-02 22:45	> 1 d	0.0567624	0.0252030	0.0338265
EARTH	1994-01-07 04:29	254.4	0.0542976	0.0447152	0.0044951
EARTH	1994-11-15 05:49	> 1 d	0.1297272	0.1203000	0.0033490
EARTH	1995-05-11 20:25	> 1 w	0.0955526	0.0820780	0.0050039
EARTH	1996-07-05 21:31	1033.0	0.0901047	0.0605209	0.0101599
EARTH	2023-01-06 20:31	14.2	0.1855626	0.1844280	0.0003782
EARTH	2023-12-30 10:36	< 1 min	0.0527656	0.0525626	0.0000677
EARTH	2024-10-21 04:51	110.2	0.1507705	0.1500856	0.0002283
EARTH	2025-06-15 01:08	89.1	0.0455605	0.0453133	0.0000828
EARTH	2026-07-10 17:42	27.9	0.1634037	0.1618080	0.0005319
EARTH	2054-01-05 05:37	941.8	0.0463908	0.0416626	0.0048134
EARTH	2054-11-13 13:51	> 1 w	0.1296242	0.1165794	0.0047714
EARTH	2055-05-07 11:30	> 1 w	0.0992429	0.0857332	0.0052252
EARTH	2055-08-22 06:44	> 1 w	0.1389910	0.1227849	0.0054377
EARTH	2056-07-03 21:21	1334.3	0.0715984	0.0402204	0.0114244
EARTH	2085-01-04 20:16	> 1 d	0.0456776	0.0423182	0.0093311
EARTH	2085-11-13 15:01	> 1 w	0.1288560	0.1035749	0.0112076
EARTH	2086-05-05 15:49	> 1 w	0.1003144	0.0781358	0.0131961
EARTH	2086-08-26 22:42	> 1 mo	0.1407773	0.1028690	0.0127070
EARTH	2087-07-04 09:54	> 1 d	0.0658147	0.0300843	0.0304155
EARTH	2116-01-08 16:56	535.5	0.0955054	0.0454802	0.0445105
EARTH	2116-12-05 20:30	> 1 w	0.0988194	0.0693926	0.0261198
EARTH	2117-03-31 00:41	> 1 mo	0.1152985	0.1150519	0.0012841
EARTH	2117-09-29 17:50	> 1 mo	0.1530241	0.1506574	0.0021177
EARTH	2118-06-27 18:52	> 1 w	0.0279618	0.0274140	0.0080749

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
77.43859320	172.64660716	0.02560758	MINIMUM
276.87823635	0.89322260	0.04058726	MINIMUM
356.14582915	84.50669391	0.11657445	SADDLE
177.70962949	268.65893071	0.15441552	SADDLE
9.61276881	279.43555176	1.91850379	SADDLE
189.81820359	99.65359443	2.12343201	MAXIMUM

Download:

MOID Plots

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