Asteroids

2025YZ2 help

Last update: 2025-12-22 13:01 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.884

Aphelion (Q)

2.145

Eccentricity (e)

0.416

Inclination (i)

8.7

deg

Orbit period (P)

680.6

Earth MOID

0.00760

U parameter

8.3

Next Earth close approach

Date

2038-12-24

Nominal distance (from Earth center)

0.03343

5001514

Maximum Brightness

21.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.9

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-20

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.514296

1-sigma variation

0.002276

Unit

Eccentricity (e)

Value

0.416446

1-sigma variation

0.000983

Unit

Inclination (i)

Value

8.7022

1-sigma variation

0.0160

Unit

Long. of Ascending Node (Ω)

Value

277.8598

1-sigma variation

0.0034

Unit

Arg. of Perihelion (ω)

Value

225.7039

1-sigma variation

0.0038

Unit

Mean Anomaly (M)

Value

322.09457

1-sigma variation

0.09582

Unit

Perihelion distance

Value

0.883674

1-sigma variation

Unit

Aphelion distance

Value

2.144918

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.747122

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.013985

1-sigma variation

Unit

MOID

Value

0.007599

1-sigma variation

Unit

Orbit Period

Value

680.6358

1-sigma variation

Unit

U parameter

Value

8.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.17919E-6	2.23712E-6	3.63152E-5	7.65345E-6	-5.70563E-6	2.18070E-4
e	2.23712E-6	9.66359E-7	1.56912E-5	3.30229E-6	-2.44430E-6	9.41889E-5
i	3.63152E-5	1.56912E-5	2.55161E-4	5.32938E-5	-3.79552E-5	1.52855E-3
Ω	7.65345E-6	3.30229E-6	5.32938E-5	1.15725E-5	-9.86603E-6	3.22597E-4
ω	-5.70563E-6	-2.44430E-6	-3.79552E-5	-9.86603E-6	1.43581E-5	-2.42212E-4
M	2.18070E-4	9.41889E-5	1.52855E-3	3.22597E-4	-2.42212E-4	9.18232E-3

Date of computation: 2025-12-22 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

25.852

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

18 - 40*

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

0.573821

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-20.301902

Unit

Source

[2]

Last Observation

Value

2025-12-22.395414

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

24 (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 2025YZ2 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	1971-12-20 07:54	> 1 mo	0.0730705	0.0115938	1.6285088
EARTH	1984-12-31 02:02	> 1 mo	0.0315748	0.0098017	0.4432306
EARTH	1998-03-05 06:10	> 1 mo	0.1598767	0.1596455	0.0088314
EARTH	2025-12-24 22:57	< 1 min	0.0221114	0.0219711	0.0000468
EARTH	2038-12-24 01:33	> 1 w	0.0334331	0.0080311	0.1764943
EARTH	2063-04-18 06:47	> 1 mo	0.1693263	0.1504176	0.5567244
EARTH	2076-03-12 00:30	> 1 mo	0.1608171	0.1600042	0.1009094
EARTH	2089-01-14 03:37	> 1 mo	0.0922155	0.0254470	1.6444937
EARTH	2101-12-20 00:29	> 1 mo	0.0938886	0.0094722	1.4309735

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
327.98702727	354.22490767	0.00759856	MINIMUM
36.07365804	95.17070334	0.15020562	MINIMUM
15.17067636	64.48384620	0.16055058	SADDLE
181.97370262	223.51413375	1.14289197	SADDLE
2.52149822	225.04466114	1.89406077	SADDLE
180.21553769	42.37006485	3.12888464	MAXIMUM

Download:

MOID Plots

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