Asteroids

2025YL help

Last update: 2026-01-01 13:01 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.975

Aphelion (Q)

1.311

Eccentricity (e)

0.147

Inclination (i)

4.6

deg

Orbit period (P)

446.4

Earth MOID

0.00155

U parameter

7.7

Next Earth close approach

Date

2026-01-11

Nominal distance (from Earth center)

0.01905

2849843

Maximum Brightness

21.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.2

mag

Diameter

10 - 22*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-16

Observatory

Kitt Peak-Bok

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

1.143089

1-sigma variation

0.000482

Unit

Eccentricity (e)

Value

0.147008

1-sigma variation

0.000372

Unit

Inclination (i)

Value

4.6400

1-sigma variation

0.0105

Unit

Long. of Ascending Node (Ω)

Value

295.6705

1-sigma variation

0.0067

Unit

Arg. of Perihelion (ω)

Value

204.0253

1-sigma variation

0.0069

Unit

Mean Anomaly (M)

Value

297.81898

1-sigma variation

0.04193

Unit

Perihelion distance

Value

0.975046

1-sigma variation

Unit

Aphelion distance

Value

1.311132

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.274294

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001896

1-sigma variation

Unit

MOID

Value

0.001555

1-sigma variation

Unit

Orbit Period

Value

446.3942

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.32300E-7	1.79112E-7	5.06748E-6	3.04307E-6	-1.30507E-6	2.01604E-5
e	1.79112E-7	1.38146E-7	3.91083E-6	2.33164E-6	-9.63585E-7	1.55252E-5
i	5.06748E-6	3.91083E-6	1.10838E-4	6.51915E-5	-2.50082E-5	4.38230E-4
Ω	3.04307E-6	2.33164E-6	6.51915E-5	4.46918E-5	-3.11100E-5	2.70388E-4
ω	-1.30507E-6	-9.63585E-7	-2.50082E-5	-3.11100E-5	4.80578E-5	-1.31561E-4
M	2.01604E-5	1.55252E-5	4.38230E-4	2.70388E-4	-1.31561E-4	1.75786E-3

Date of computation: 2026-01-01 13:01 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

27.206

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

10 - 22*

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

Unit

Source

[1]

Normalized RMS of residuals

Value

0.766152

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-16.377939

Unit

Source

[2]

Last Observation

Value

2025-12-30.431796

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

23 (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 2025YL 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	1950-12-28 11:19	> 1 mo	0.1364842	0.0141190	3.7342617
EARTH	1962-03-28 19:22	> 1 mo	0.1472838	0.0706342	2.3351440
EARTH	1978-02-14 03:26	> 1 mo	0.0506660	0.0251428	0.9081957
EARTH	1994-03-30 23:38	> 1 mo	0.1631822	0.0721844	1.6686711
EARTH	1998-12-24 11:10	> 1 mo	0.1962186	0.0172316	1.6310753
EARTH	2015-01-12 03:26	> 1 w	0.0203517	0.0005079	0.0413271
EARTH	2026-01-11 23:50	3.4	0.0190500	0.0188936	0.0000521
EARTH	2049-01-26 10:44	> 1 mo	0.0263582	0.0029476	0.0696215
EARTH	2066-04-06 19:23	> 1 mo	0.1879348	0.0776759	1.0948981
EARTH	2077-01-08 12:05	> 1 mo	0.0335021	0.0004230	1.4573863
EARTH	2077-05-03 06:28	> 1 mo	0.1493322	0.1023501	0.8971309
EARTH	2100-01-24 02:33	> 1 mo	0.0213115	0.0006820	24.7340557
EARTH	2110-12-25 02:25	> 1 mo	0.1954126	0.0149556	479.0381963

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
339.78525012	14.77536266	0.00155464	MINIMUM
187.40713728	225.23874950	0.30042476	SADDLE
5.35341199	223.79766273	1.98857035	SADDLE
182.87685258	41.28524456	2.29828825	MAXIMUM

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MOID Plots

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