Asteroids

2025TU1 help

Last update: 2025-10-04 10:45 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.514

Aphelion (Q)

1.075

Eccentricity (e)

0.353

Inclination (i)

2.1

deg

Orbit period (P)

258.7

Earth MOID

0.00041

U parameter

8.5

Next Earth close approach

Date

2025-10-13

Nominal distance (from Earth center)

0.01526

2282626

Maximum Brightness

19.1

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

26.4

mag

Diameter

14 - 30*

Taxonomic type

Rotation period (T)

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

0.794635

1-sigma variation

0.000704

Unit

Eccentricity (e)

Value

0.353011

1-sigma variation

0.001761

Unit

Inclination (i)

Value

2.1248

1-sigma variation

0.0155

Unit

Long. of Ascending Node (Ω)

Value

22.4587

1-sigma variation

0.0284

Unit

Arg. of Perihelion (ω)

Value

148.3153

1-sigma variation

0.0369

Unit

Mean Anomaly (M)

Value

287.22187

1-sigma variation

0.20832

Unit

Perihelion distance

Value

0.514121

1-sigma variation

Unit

Aphelion distance

Value

1.075150

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.002742

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.469033

1-sigma variation

Unit

MOID

Value

0.000410

1-sigma variation

Unit

Orbit Period

Value

258.7320

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.96046E-7	-1.24029E-6	-1.09326E-5	1.91125E-5	-2.59905E-5	-1.46339E-4
e	-1.24029E-6	3.10141E-6	2.73456E-5	-4.79203E-5	6.49881E-5	3.66138E-4
i	-1.09326E-5	2.73456E-5	2.41394E-4	-4.26770E-4	5.73111E-4	3.23488E-3
Ω	1.91125E-5	-4.79203E-5	-4.26770E-4	8.07394E-4	-1.00420E-3	-5.76346E-3
ω	-2.59905E-5	6.49881E-5	5.73111E-4	-1.00420E-3	1.36277E-3	7.67075E-3
M	-1.46339E-4	3.66138E-4	3.23488E-3	-5.76346E-3	7.67075E-3	4.33954E-2

Date of computation: 2025-10-04 10:45 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

26.427

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

14 - 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

[-]

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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

0.629058

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-10-02.466231

Unit

Source

[2]

Last Observation

Value

2025-10-04.420514

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

14 (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 2025TU1 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1950-10-18 05:43	> 1 w	0.1175740	0.0017204	1.6341384
EARTH	1957-08-13 04:55	> 1 d	0.0835293	0.0322837	0.3890190
VENUS	1957-12-27 01:48	> 1 w	0.0214396	0.0208349	0.1033844
EARTH	1962-09-14 23:54	> 1 mo	0.0726635	0.0699058	0.0064360
EARTH	1967-10-18 19:12	> 1 d	0.0716490	0.0014170	0.1885861
VENUS	1973-01-30 13:36	> 1 w	0.0322074	0.0149688	0.4625219
EARTH	1974-08-13 14:31	> 1 d	0.0989456	0.0333806	0.3270379
EARTH	1979-09-06 07:45	> 1 mo	0.0695409	0.0431484	0.0339966
EARTH	1984-10-16 21:58	> 1 d	0.0216936	0.0018272	0.0877368
EARTH	1991-08-14 05:28	1034.8	0.1019287	0.0317844	0.0868301
VENUS	1996-06-15 12:15	> 1 d	0.0228020	0.0148555	0.0653494
EARTH	1996-09-21 03:53	> 1 w	0.0691593	0.0461753	0.0089112
EARTH	2001-10-17 04:18	291.0	0.1593778	0.1284382	0.0103146
EARTH	2008-08-24 10:18	> 1 w	0.0492745	0.0335769	0.0239951
VENUS	2009-09-01 16:44	> 1 d	0.0452314	0.0215559	0.0760503
EARTH	2013-10-17 22:06	> 1 d	0.0524223	0.0001200	0.0826771
EARTH	2020-08-15 05:11	> 1 d	0.0375055	0.0317936	0.0153695
EARTH	2025-10-13 10:11	17.6	0.0152584	0.0151090	0.0000498
EARTH	2037-08-17 13:19	> 1 w	0.0328380	0.0321196	0.0117844
VENUS	2038-11-25 08:20	> 1 d	0.0436352	0.0165176	0.1090141
EARTH	2042-10-06 15:36	> 1 w	0.0450594	0.0026832	0.0639630
VENUS	2047-03-10 01:05	> 1 d	0.0410509	0.0227875	0.1072119
EARTH	2047-10-17 19:35	> 1 d	0.1476563	0.0040771	0.0916262
EARTH	2054-08-14 16:01	1074.7	0.0443145	0.0413957	0.0014709
EARTH	2059-09-24 05:37	> 1 w	0.0673833	0.0227976	0.0207217
VENUS	2062-04-15 08:30	> 1 d	0.0489787	0.0167670	0.1142984
EARTH	2064-10-18 03:59	586.8	0.0780178	0.0010472	0.1082682
VENUS	2071-07-05 20:26	> 1 d	0.0177997	0.0168273	0.0280824
EARTH	2071-08-14 09:18	1048.7	0.1447321	0.0315896	0.0662460
EARTH	2076-08-23 23:37	> 1 mo	0.0489909	0.0330351	0.1078734
VENUS	2079-10-19 20:48	> 1 w	0.0341528	0.0233089	0.3283047
EARTH	2081-10-11 08:59	> 1 mo	0.0262904	0.0025977	0.2958636
EARTH	2086-10-17 18:27	> 1 d	0.1347384	0.1270984	0.0025471
VENUS	2089-01-10 00:10	> 1 w	0.0299494	0.0235792	0.1356212
EARTH	2093-08-13 04:23	> 1 d	0.1303676	0.0324713	0.5815906
VENUS	2098-04-04 13:07	> 1 mo	0.0454115	0.0236015	0.9885775
EARTH	2098-08-20 00:05	> 1 mo	0.0388860	0.0314828	0.4016621
EARTH	2103-10-01 07:21	> 1 mo	0.0588505	0.0107544	0.3940769
VENUS	2108-06-02 06:01	> 1 mo	0.0341532	0.0180280	0.8483217
EARTH	2108-10-18 10:12	> 1 w	0.0729334	0.0049312	0.6936983
EARTH	2115-08-15 04:08	> 1 d	0.1650166	0.0303599	0.3783311
VENUS	2116-09-17 19:47	> 1 mo	0.0386185	0.0244740	0.6048747
EARTH	2120-08-18 02:33	> 1 mo	0.0323048	0.0308386	0.2470898
EARTH	2125-09-29 22:16	> 1 mo	0.0595265	0.0126619	0.9888033
VENUS	2125-12-09 05:09	> 1 mo	0.0267042	0.0247053	1.2207699

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
223.72428254	281.45599474	0.00041005	MINIMUM
141.95157361	223.33961822	0.03217136	MINIMUM
180.96100522	251.02560596	0.07145435	SADDLE
4.73763851	74.48095157	0.48140388	SADDLE
4.89898290	254.69500089	1.52011726	SADDLE
182.35709647	71.98637614	2.07006665	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2025TU1

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2054-08-01.987	71480.987	-0.660	0.386	1.75 ± 173.935	4.94E5	1.12E-8	1.97E-1	-8.45
2056-10-14.850	72285.850	-0.662	0.000	0.51 ± 0.107	3.91E7	2.71E-8	1.92E-1	-8.12
2086-08-22.077	83189.077	-0.488	1.893	1.74 ± 4.244	4.77E6	2.14E-9	1.96E-1	-9.50


Based on 14 optical observations (of which 0 are rejected as outliers) from 2025/10/02.466 to 2025/10/04.421.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.75 and 1.75 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 5.0, Date of computation=20251004 110250.001 UTC.

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Download Impactor Table as: