Asteroids

2025CT1 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.862

Aphelion (Q)

1.094

Eccentricity (e)

0.119

Inclination (i)

1.7

deg

Orbit period (P)

353.3

Earth MOID

0.02696

U parameter

4.7

Next Earth close approach

Date

2026-03-15

Nominal distance (from Earth center)

0.16403

24539191

Maximum Brightness

24.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.3

mag

Diameter

23 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-02-05

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

0.978049

1-sigma variation

0.000004

Unit

Eccentricity (e)

Value

0.119015

1-sigma variation

0.000036

Unit

Inclination (i)

Value

1.6656

1-sigma variation

0.0005

Unit

Long. of Ascending Node (Ω)

Value

109.2552

1-sigma variation

0.0025

Unit

Arg. of Perihelion (ω)

Value

174.7576

1-sigma variation

0.0015

Unit

Mean Anomaly (M)

Value

156.83287

1-sigma variation

0.00400

Unit

Perihelion distance

Value

0.861646

1-sigma variation

Unit

Aphelion distance

Value

1.094452

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.110156

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.155979

1-sigma variation

Unit

MOID

Value

0.026956

1-sigma variation

Unit

Orbit Period

Value

353.2964

1-sigma variation

Unit

U parameter

Value

4.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.59288E-11	-1.43881E-10	-1.91556E-9	-9.86121E-9	5.95155E-9	-1.58691E-8
e	-1.43881E-10	1.31130E-9	1.74434E-8	8.93661E-8	-5.44007E-8	1.44851E-7
i	-1.91556E-9	1.74434E-8	2.32127E-7	1.19104E-6	-7.24911E-7	1.92638E-6
Ω	-9.86121E-9	8.93661E-8	1.19104E-6	6.15797E-6	-3.74327E-6	9.85847E-6
ω	5.95155E-9	-5.44007E-8	-7.24911E-7	-3.74327E-6	2.30033E-6	-6.01065E-6
M	-1.58691E-8	1.44851E-7	1.92638E-6	9.85847E-6	-6.01065E-6	1.60074E-5

Date of computation: 2025-09-10 00:30 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

25.312

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

23 - 50*

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

220

Unit

Source

[1]

Normalized RMS of residuals

Value

0.608497

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-02-03.48516

Unit

Source

[2]

Last Observation

Value

2025-03-17.78758

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

41 (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 2025CT1 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	1969-10-25 06:22	518.3	0.0446530	0.0301741	0.0067804
EARTH	1970-08-13 14:14	> 1 w	0.1402572	0.1355233	0.0016112
EARTH	1970-12-30 16:07	> 1 d	0.1083878	0.1064340	0.0006710
EARTH	1971-06-12 09:00	> 1 d	0.1497669	0.1466362	0.0010566
EARTH	1972-03-17 16:08	163.5	0.0271337	0.0265179	0.0005652
EARTH	1995-10-27 18:21	15.0	0.1162157	0.1142953	0.0006404
EARTH	1996-09-11 16:49	1252.0	0.1097124	0.1084546	0.0004199
EARTH	1996-12-02 08:50	958.4	0.0916472	0.0908382	0.0002704
EARTH	1997-07-03 00:03	1121.0	0.1572782	0.1571350	0.0000480
EARTH	1998-02-21 00:04	1055.1	0.0770726	0.0753348	0.0005812
EARTH	1999-03-15 15:40	34.7	0.1415933	0.1386109	0.0009946
EARTH	2022-10-24 21:12	< 1 min	0.0487546	0.0486587	0.0000320
EARTH	2023-08-19 00:03	51.1	0.1344072	0.1342726	0.0000449
EARTH	2023-12-23 15:39	34.4	0.1074822	0.1073782	0.0000347
EARTH	2024-06-19 02:29	22.9	0.1521713	0.1520642	0.0000357
EARTH	2025-03-13 16:20	< 1 min	0.0495681	0.0495283	0.0000133
EARTH	2026-03-15 03:08	1.6	0.1640344	0.1639556	0.0000263
EARTH	2051-10-24 01:46	9.1	0.0330540	0.0315176	0.0005538
EARTH	2052-08-15 18:38	> 1 d	0.1341703	0.1330075	0.0003883
EARTH	2052-12-22 15:39	1321.2	0.1090760	0.1085247	0.0001850
EARTH	2053-06-22 02:12	> 1 d	0.1507137	0.1504891	0.0000754
EARTH	2054-03-02 16:54	1192.7	0.0691914	0.0666394	0.0008562
EARTH	2055-03-17 12:50	61.3	0.1219025	0.1181148	0.0012635
EARTH	2082-10-25 19:14	19.8	0.1214755	0.1212025	0.0000910
EARTH	2083-11-10 10:08	52.7	0.0703851	0.0702610	0.0000414
EARTH	2084-07-20 03:20	59.0	0.1507012	0.1506375	0.0000213
EARTH	2085-01-18 06:58	196.5	0.1089155	0.1087442	0.0000571
EARTH	2085-05-26 10:26	170.6	0.1342565	0.1340581	0.0000662
EARTH	2086-03-19 07:54	11.5	0.0325779	0.0322768	0.0001024
EARTH	2111-10-27 17:38	67.1	0.1157529	0.1089419	0.0022746
EARTH	2112-09-22 12:26	> 1 d	0.0982665	0.0935543	0.0015775
EARTH	2112-11-24 06:51	> 1 d	0.0837125	0.0803634	0.0011239
EARTH	2113-07-11 05:42	> 1 d	0.1547814	0.1547736	0.0000040
EARTH	2114-02-04 21:44	> 1 d	0.0958758	0.0937647	0.0007074
EARTH	2114-05-07 23:22	> 1 d	0.1154385	0.1123410	0.0010359
EARTH	2115-03-18 15:57	24.6	0.0883957	0.0832640	0.0017169

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
260.47190040	74.67222877	0.02703511	MINIMUM
98.63394422	288.03235921	0.02846211	MINIMUM
179.49516614	1.33040592	0.11116158	SADDLE
359.53419549	181.29778158	0.15469127	SADDLE
359.74158508	1.53504228	1.84527965	SADDLE
179.81452786	181.60870758	2.11107434	MAXIMUM

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MOID Plots

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