Asteroids

2025YE4 help

Last update: 2025-12-24 01:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.620

Aphelion (Q)

1.090

Eccentricity (e)

0.275

Inclination (i)

26.4

deg

Orbit period (P)

288.6

Earth MOID

0.03379

U parameter

7.7

Next Earth close approach

Date

2040-12-20

Nominal distance (from Earth center)

0.1106

16545447

Maximum Brightness

23.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.2

mag

Diameter

15 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-21

Observatory

Palomar Mountain--ZTF

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

0.854690

1-sigma variation

0.000219

Unit

Eccentricity (e)

Value

0.274927

1-sigma variation

0.000592

Unit

Inclination (i)

Value

26.4463

1-sigma variation

0.1466

Unit

Long. of Ascending Node (Ω)

Value

89.4330

1-sigma variation

0.0014

Unit

Arg. of Perihelion (ω)

Value

145.3865

1-sigma variation

0.1005

Unit

Mean Anomaly (M)

Value

197.71031

1-sigma variation

0.21885

Unit

Perihelion distance

Value

0.619712

1-sigma variation

Unit

Aphelion distance

Value

1.089667

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.037259

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.373484

1-sigma variation

Unit

MOID

Value

0.033792

1-sigma variation

Unit

Orbit Period

Value

288.6099

1-sigma variation

Unit

U parameter

Value

7.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.77897E-8	1.29474E-7	3.20433E-5	-3.14340E-7	-2.19631E-5	4.78410E-5
e	1.29474E-7	3.50892E-7	8.68429E-5	-8.51894E-7	-5.95092E-5	1.29632E-4
i	3.20433E-5	8.68429E-5	2.14937E-2	-2.10842E-4	-1.47277E-2	3.20824E-2
Ω	-3.14340E-7	-8.51894E-7	-2.10842E-4	2.06829E-6	1.44476E-4	-3.14721E-4
ω	-2.19631E-5	-5.95092E-5	-1.47277E-2	1.44476E-4	1.00941E-2	-2.19878E-2
M	4.78410E-5	1.29632E-4	3.20824E-2	-3.14721E-4	-2.19878E-2	4.78959E-2

Date of computation: 2025-12-24 01:30 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

26.236

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

15 - 30*

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

1.075

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-21.234346

Unit

Source

[2]

Last Observation

Value

2025-12-24.017231

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

20 (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

Close Approaches for 2025YE4 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	1957-12-21 18:23	> 1 d	0.0831719	0.0384187	0.0655003
EARTH	1961-12-21 21:26	> 1 d	0.1746909	0.0439751	0.0721035
EARTH	1976-12-22 18:43	243.1	0.0374939	0.0341660	0.0182421
EARTH	1991-12-21 23:34	> 1 d	0.0968292	0.0405877	0.0437245
EARTH	1995-12-22 11:58	1102.1	0.1729565	0.0475710	0.0473492
EARTH	2006-12-17 19:00	> 1 d	0.1938591	0.1072074	0.0312600
EARTH	2010-12-23 08:57	181.3	0.0705950	0.0353379	0.0272914
EARTH	2025-12-22 22:32	< 1 min	0.0362512	0.0357170	0.0001781
EARTH	2040-12-20 22:32	1168.0	0.1105995	0.0447661	0.0272912
EARTH	2044-12-22 03:38	667.7	0.1580333	0.0583762	0.0362072
EARTH	2059-12-23 19:44	173.0	0.0457582	0.0351324	0.0299385
EARTH	2074-12-22 00:58	> 1 d	0.0928324	0.0408411	0.0410330
EARTH	2078-12-22 16:20	859.8	0.1671128	0.0513672	0.0436894
EARTH	2093-12-23 05:16	381.7	0.0366791	0.0355082	0.0068367
EARTH	2112-12-24 04:13	469.8	0.0367155	0.0361441	0.0079645

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
227.20035076	349.96049483	0.03379238	MINIMUM
41.84047242	185.54075324	0.35973215	MINIMUM
113.17669896	262.06706667	0.44903172	SADDLE
327.68976467	91.30824936	0.49894904	SADDLE
351.29778198	303.77539774	1.59300732	SADDLE
189.86725416	144.01156655	2.08997064	MAXIMUM

Download:

MOID Plots

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