Asteroids

2025YL help

Last update: 2026-03-18 10:55 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.974

Aphelion (Q)

1.301

Eccentricity (e)

0.144

Inclination (i)

4.7

deg

Orbit period (P)

443.1

Earth MOID

0.00166

U parameter

6.5

Next Earth close approach

Date

2043-01-01

Nominal distance (from Earth center)

0.10062

15053114

Maximum Brightness

24.9

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.137494

1-sigma variation

0.000087

Unit

Eccentricity (e)

Value

0.143745

1-sigma variation

0.000069

Unit

Inclination (i)

Value

4.7087

1-sigma variation

0.0019

Unit

Long. of Ascending Node (Ω)

Value

295.3453

1-sigma variation

0.0008

Unit

Arg. of Perihelion (ω)

Value

205.2739

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

99.17640

1-sigma variation

0.01109

Unit

Perihelion distance

Value

0.973984

1-sigma variation

Unit

Aphelion distance

Value

1.301003

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.263928

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.002028

1-sigma variation

Unit

MOID

Value

0.001664

1-sigma variation

Unit

Orbit Period

Value

443.1206

1-sigma variation

Unit

U parameter

Value

6.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.65183E-9	6.05927E-9	1.70331E-7	6.77491E-8	5.78936E-9	-9.69753E-7
e	6.05927E-9	4.79818E-9	1.34882E-7	5.36477E-8	4.60051E-9	-7.67931E-7
i	1.70331E-7	1.34882E-7	3.79181E-6	1.50794E-6	1.30720E-7	-2.15881E-5
Ω	6.77491E-8	5.36477E-8	1.50794E-6	6.00307E-7	4.99468E-8	-8.58554E-6
ω	5.78936E-9	4.60051E-9	1.30720E-7	4.99468E-8	2.13926E-8	-7.45112E-7
M	-9.69753E-7	-7.67931E-7	-2.15881E-5	-8.58554E-6	-7.45112E-7	1.22909E-4

Date of computation: 2026-03-18 10:55 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

27.156

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

0.873277

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

2026-01-14.53708

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

28 (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 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	1966-04-02 00:03	1002.8	0.1623242	0.1315046	0.0106183
EARTH	1977-02-27 22:52	1312.3	0.0682514	0.0636215	0.0015885
EARTH	1988-03-11 10:52	> 1 d	0.0838551	0.0678167	0.0061742
EARTH	2014-12-27 13:10	496.0	0.1560914	0.1336728	0.0074779
EARTH	2026-01-11 23:58	< 1 min	0.0192131	0.0191878	0.0000084
EARTH	2043-01-01 07:52	1173.6	0.1006239	0.0657332	0.0116533
EARTH	2043-05-28 10:03	> 1 w	0.1828703	0.1690925	0.0049265
EARTH	2066-02-21 08:37	> 1 d	0.0622822	0.0468918	0.0057716
EARTH	2083-03-19 09:20	> 1 d	0.0929260	0.0756588	0.0067236
EARTH	2093-12-26 21:43	71.0	0.1701435	0.1699299	0.0000713
EARTH	2111-01-20 06:51	> 1 d	0.0090834	0.0025308	0.0125601

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
338.64469245	11.43475535	0.00166366	MINIMUM
187.70453418	223.30293595	0.29152323	SADDLE
5.11752802	221.38126354	1.98674683	SADDLE
182.65553318	38.88410169	2.28752809	MAXIMUM

Download:

MOID Plots

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