Asteroids

2025DL22 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.908

Aphelion (Q)

2.769

Eccentricity (e)

0.506

Inclination (i)

2.3

deg

Orbit period (P)

910.2

Earth MOID

0.00158

U parameter

7.4

Next Earth close approach

Date

2030-03-01

Nominal distance (from Earth center)

0.06698

10020164

Maximum Brightness

22.2

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

25.6

mag

Diameter

20 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-26

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

1.838050

1-sigma variation

0.001134

Unit

Eccentricity (e)

Value

0.506232

1-sigma variation

0.000332

Unit

Inclination (i)

Value

2.3037

1-sigma variation

0.0012

Unit

Long. of Ascending Node (Ω)

Value

350.9762

1-sigma variation

0.0005

Unit

Arg. of Perihelion (ω)

Value

219.5189

1-sigma variation

0.0032

Unit

Mean Anomaly (M)

Value

167.50275

1-sigma variation

0.15408

Unit

Perihelion distance

Value

0.907570

1-sigma variation

Unit

Aphelion distance

Value

2.768529

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.235442

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.010038

1-sigma variation

Unit

MOID

Value

0.001581

1-sigma variation

Unit

Orbit Period

Value

910.1946

1-sigma variation

Unit

U parameter

Value

7.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.28516E-6	3.76422E-7	1.32990E-6	-6.14557E-7	3.63090E-6	-1.74668E-4
e	3.76422E-7	1.10254E-7	3.89528E-7	-1.80000E-7	1.06354E-6	-5.11601E-5
i	1.32990E-6	3.89528E-7	1.37631E-6	-6.36238E-7	3.75831E-6	-1.80749E-4
Ω	-6.14557E-7	-1.80000E-7	-6.36238E-7	2.95651E-7	-1.73664E-6	8.35250E-5
ω	3.63090E-6	1.06354E-6	3.75831E-6	-1.73664E-6	1.02783E-5	-4.93487E-4
M	-1.74668E-4	-5.11601E-5	-1.80749E-4	8.35250E-5	-4.93487E-4	2.37394E-2

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

25.57

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

20 - 50*

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

387

Unit

Source

[1]

Normalized RMS of residuals

Value

0.659054

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-26.223853

Unit

Source

[2]

Last Observation

Value

2025-03-10.203285

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

54 (1)

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 2025DL22 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	1953-05-31 00:38	> 1 mo	0.0557596	0.0420025	0.1065416
EARTH	1958-04-08 14:29	> 1 w	0.0944130	0.0575105	0.0126777
EARTH	1963-03-02 13:47	> 1 w	0.0483669	0.0038819	0.1383214
EARTH	2015-06-14 15:29	> 1 d	0.0593502	0.0411386	0.0362909
EARTH	2020-05-03 02:24	> 1 w	0.1005175	0.0883334	0.0044562
EARTH	2025-03-12 18:00	< 1 min	0.0192258	0.0191911	0.0000116
EARTH	2030-03-01 15:35	> 1 d	0.0669807	0.0025523	0.0280074
MARS	2035-06-29 13:00	> 1 d	0.0152250	0.0018993	0.0317161
EARTH	2102-06-25 11:28	> 1 w	0.1550073	0.0410127	0.1990075
EARTH	2107-06-13 23:53	> 1 w	0.0449756	0.0401596	0.0741173
EARTH	2112-05-22 16:26	> 1 mo	0.0803088	0.0439902	0.1134647
EARTH	2117-04-18 20:33	> 1 mo	0.1008743	0.0558070	0.0416747
EARTH	2122-03-23 21:45	> 1 mo	0.0571085	0.0024245	0.1868948

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
335.20530965	66.28945397	0.00174632	MINIMUM
27.81408299	155.55438814	0.04083526	MINIMUM
2.55262355	112.61972511	0.10230052	SADDLE
180.61401829	289.86498934	1.77417655	SADDLE
1.76518607	291.24835770	1.90244028	SADDLE
180.55675838	109.83622074	3.77486142	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2025DL22

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2109-03-11.132	91425.132	2.187	0.63 ± 0.001	2.57E5	4.14E-7	7.83E-1	-6.87
2113-03-11.100	92886.100	2.971	0.98 ± 0.001	6.55E4	1.59E-7	7.86E-1	-7.30
2114-03-11.255	93251.255	2.202	1.05 ± 0.002	1.86E6	3.88E-8	7.84E-1	-7.92
2118-03-11.169	94712.169	3.132	1.06 ± 0.001	1.04E5	5.68E-8	7.90E-1	-7.77
2119-03-11.280	95077.280	2.497	1.44 ± 0.000	5.03E6	1.37E-9	7.88E-1	-9.40
2121-03-11.224	95808.224	2.817	1.45 ± 0.007	4.13E6	7.37E-10	7.86E-1	-9.68
2124-03-10.545	96903.545	2.638	0.25 ± 0.001	2.30E5	1.54E-7	7.86E-1	-7.37
2124-03-10.551	96903.551	2.645	0.94 ± 0.000	4.71E5	7.17E-8	7.91E-1	-7.70


Based on 54 optical observations (of which 1 are rejected as outliers) from 2025/02/26.224 to 2025/03/10.203.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.46 and 1.46 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20250805 130500.123 UTC.

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