Asteroids

2025YO3 help

Last update: 2025-12-23 13:16 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.996

Aphelion (Q)

1.218

Eccentricity (e)

0.100

Inclination (i)

13.8

deg

Orbit period (P)

425.4

Earth MOID

0.02075

U parameter

7.2

Next Earth close approach

Date

2032-12-18

Nominal distance (from Earth center)

0.18534

27725882

Maximum Brightness

25.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.6

mag

Diameter

13 - 29*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-21

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

1.106901

1-sigma variation

0.000210

Unit

Eccentricity (e)

Value

0.100159

1-sigma variation

0.000154

Unit

Inclination (i)

Value

13.8214

1-sigma variation

0.0141

Unit

Long. of Ascending Node (Ω)

Value

272.2167

1-sigma variation

0.0011

Unit

Arg. of Perihelion (ω)

Value

205.2152

1-sigma variation

0.0167

Unit

Mean Anomaly (M)

Value

312.19022

1-sigma variation

0.02672

Unit

Perihelion distance

Value

0.996035

1-sigma variation

Unit

Aphelion distance

Value

1.217768

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.187062

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.020989

1-sigma variation

Unit

MOID

Value

0.020747

1-sigma variation

Unit

Orbit Period

Value

425.3649

1-sigma variation

Unit

U parameter

Value

7.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.41507E-8	3.22732E-8	2.94509E-6	2.25928E-7	-2.85150E-6	5.36899E-6
e	3.22732E-8	2.36086E-8	2.16004E-6	1.65601E-7	-2.04413E-6	3.89205E-6
i	2.94509E-6	2.16004E-6	1.99590E-4	1.52668E-5	-1.73287E-4	3.44441E-4
Ω	2.25928E-7	1.65601E-7	1.52668E-5	1.16853E-6	-1.35321E-5	2.66163E-5
ω	-2.85150E-6	-2.04413E-6	-1.73287E-4	-1.35321E-5	2.77255E-4	-4.22096E-4
M	5.36899E-6	3.89205E-6	3.44441E-4	2.66163E-5	-4.22096E-4	7.13872E-4

Date of computation: 2025-12-23 13:16 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

26.59

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

13 - 29*

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

0.600331

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-21.451395

Unit

Source

[2]

Last Observation

Value

2025-12-23.395674

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

27 (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 2025YO3 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	1961-12-30 18:59	559.4	0.1891753	0.1184369	0.0236196
EARTH	1968-12-25 00:25	402.3	0.0240506	0.0205623	0.0042051
EARTH	1975-12-22 06:22	825.6	0.0896027	0.0395253	0.0172195
EARTH	1983-06-09 20:08	> 1 d	0.1829792	0.1823705	0.0012937
EARTH	1990-06-24 22:34	> 1 d	0.1908065	0.1869382	0.0031843
EARTH	2011-12-31 09:39	375.9	0.1951101	0.1452640	0.0166313
EARTH	2018-12-27 03:33	573.1	0.0633204	0.0297240	0.0120437
EARTH	2025-12-24 05:53	< 1 min	0.0276070	0.0275194	0.0000292
EARTH	2032-12-18 00:49	477.8	0.1853361	0.1472042	0.0127210
EARTH	2033-06-05 18:41	> 1 d	0.1845083	0.1815906	0.0019824
EARTH	2040-06-24 05:44	> 1 d	0.1892595	0.1858440	0.0037889
EARTH	2061-12-28 09:18	> 1 d	0.1096344	0.0182682	0.0506624
EARTH	2068-12-23 09:16	> 1 d	0.0432158	0.0206740	0.0371364
EARTH	2076-06-13 13:27	> 1 d	0.1780538	0.1768170	0.0016955
EARTH	2097-12-27 13:10	> 1 d	0.0858176	0.0196081	0.1632578
EARTH	2104-12-22 08:01	> 1 d	0.1004912	0.0190704	0.1361142
EARTH	2105-05-29 03:02	> 1 w	0.1989176	0.1901882	0.0353376
EARTH	2112-06-20 09:48	> 1 w	0.1812158	0.1784357	0.0084100

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
337.82178645	351.78887279	0.02074746	MINIMUM
140.81830801	160.45879353	0.18208051	MINIMUM
67.29326084	88.10150138	0.25403876	SADDLE
235.39171496	247.32248032	0.30094018	SADDLE
13.19935204	209.37703581	2.00890241	SADDLE
176.60617103	12.64956629	2.19931505	MAXIMUM

Download:

MOID Plots

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