Asteroids

2025XY help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.519

Aphelion (Q)

1.054

Eccentricity (e)

0.340

Inclination (i)

4.9

deg

Orbit period (P)

254.7

Earth MOID

0.00536

U parameter

7.3

Next Earth close approach

Date

2033-01-20

Nominal distance (from Earth center)

0.07405

11078156

Maximum Brightness

23.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.3

mag

Diameter

9 - 21*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-12-09

Observatory

JPL SynTrack Robotic Telescope, Auberry

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

0.786456

1-sigma variation

0.000114

Unit

Eccentricity (e)

Value

0.339597

1-sigma variation

0.000280

Unit

Inclination (i)

Value

4.9149

1-sigma variation

0.0053

Unit

Long. of Ascending Node (Ω)

Value

254.7648

1-sigma variation

0.0003

Unit

Arg. of Perihelion (ω)

Value

26.1395

1-sigma variation

0.0033

Unit

Mean Anomaly (M)

Value

109.79934

1-sigma variation

0.02273

Unit

Perihelion distance

Value

0.519378

1-sigma variation

Unit

Aphelion distance

Value

1.053534

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.483118

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.015727

1-sigma variation

Unit

MOID

Value

0.005360

1-sigma variation

Unit

Orbit Period

Value

254.7475

1-sigma variation

Unit

U parameter

Value

7.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.28823E-8	-3.17684E-8	-6.05404E-7	-3.71475E-8	3.55467E-7	2.56711E-6
e	-3.17684E-8	7.83774E-8	1.49367E-6	9.20967E-8	-8.71050E-7	-6.34388E-6
i	-6.05404E-7	1.49367E-6	2.84689E-5	1.75744E-6	-1.65942E-5	-1.20911E-4
Ω	-3.71475E-8	9.20967E-8	1.75744E-6	1.15379E-7	-9.47648E-7	-7.59003E-6
ω	3.55467E-7	-8.71050E-7	-1.65942E-5	-9.47648E-7	1.06983E-5	6.87155E-5
M	2.56711E-6	-6.34388E-6	-1.20911E-4	-7.59003E-6	6.87155E-5	5.16617E-4

Date of computation: 2025-12-12 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

27.275

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

9 - 21*

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

0.587216

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-12-09.245585

Unit

Source

[2]

Last Observation

Value

2025-12-12.27698

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

47 (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 2025XY 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	1954-12-15 18:27	> 1 mo	0.0563620	0.0177551	11.0478273
EARTH	1962-02-01 11:46	> 1 mo	0.1101264	0.0663408	17.0613739
EARTH	1963-12-01 02:56	> 1 mo	0.0940914	0.0095221	20.6731913
EARTH	1971-01-11 02:32	> 1 mo	0.0776904	0.0752386	1.2057886
EARTH	1979-12-04 02:07	> 1 w	0.0065691	0.0065032	0.0368634
EARTH	1987-01-21 17:16	> 1 w	0.0716533	0.0693908	0.0238801
EARTH	1995-12-02 23:50	> 1 d	0.0155765	0.0063082	0.0266390
EARTH	2002-12-24 09:19	> 1 d	0.0732220	0.0528593	0.0076080
EARTH	2010-01-25 08:57	> 1 d	0.0699720	0.0689931	0.0021007
EARTH	2017-02-01 20:46	81.4	0.1334102	0.1067304	0.0094120
EARTH	2018-12-01 01:55	134.9	0.1152005	0.0889572	0.0087551
EARTH	2025-12-05 09:35	< 1 min	0.0164063	0.0163617	0.0000149
EARTH	2033-01-20 02:52	> 1 d	0.0740529	0.0713831	0.0013672
EARTH	2040-02-01 15:34	439.1	0.1771952	0.1310120	0.0159657
EARTH	2041-12-01 00:58	640.2	0.0496612	0.0061020	0.0193078
EARTH	2048-12-27 05:26	> 1 d	0.0769159	0.0680274	0.0031747
EARTH	2056-02-01 00:36	449.5	0.0782976	0.0724519	0.0023229
EARTH	2057-12-02 03:51	97.0	0.1830195	0.1726495	0.0034570
EARTH	2064-12-04 18:23	729.1	0.0129130	0.0045641	0.0036656
EARTH	2072-01-31 06:26	1022.9	0.0766962	0.0690368	0.0059006
EARTH	2073-12-01 12:24	550.8	0.1552253	0.0928502	0.0208170
EARTH	2081-01-01 00:49	> 1 w	0.0794567	0.0739382	0.0042242
EARTH	2088-02-01 02:16	> 1 d	0.1904256	0.0716424	0.0548989
EARTH	2089-12-02 18:46	> 1 d	0.0118581	0.0038811	0.0522428
EARTH	2097-01-03 23:05	> 1 mo	0.0818956	0.0810575	0.0191035
EARTH	2104-02-02 23:06	> 1 w	0.0876494	0.0722231	0.5128686
EARTH	2105-12-02 23:50	> 1 w	0.1702176	0.0080164	1.0983715
EARTH	2112-12-05 09:48	> 1 mo	0.0092422	0.0031422	1.2055935
EARTH	2120-02-02 11:12	> 1 mo	0.0923138	0.0715585	10.1687128
EARTH	2121-12-02 01:13	> 1 mo	0.1175242	0.0065635	21.6560259

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
138.83820247	330.56199395	0.00535962	MINIMUM
217.44704706	25.83904728	0.06906728	MINIMUM
187.20514641	4.49443902	0.08145129	SADDLE
0.89650128	180.81720902	0.49957821	SADDLE
0.30927951	359.95358118	1.50267693	SADDLE
179.80273802	179.38773966	2.07133479	MAXIMUM

Download:

MOID Plots

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