Asteroids

2025OT4 help

Last update: 2025-07-31 14:13 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.925

Aphelion (Q)

1.205

Eccentricity (e)

0.131

Inclination (i)

9.0

deg

Orbit period (P)

401.4

Earth MOID

0.00650

U parameter

6.9

Next Earth close approach

Date

2025-08-07

Nominal distance (from Earth center)

0.00993

1486069

Maximum Brightness

16.8

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

24.8

mag

Diameter

29 - 60*

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.064952

1-sigma variation

0.000126

Unit

Eccentricity (e)

Value

0.131178

1-sigma variation

0.000147

Unit

Inclination (i)

Value

8.9587

1-sigma variation

0.0096

Unit

Long. of Ascending Node (Ω)

Value

134.3179

1-sigma variation

0.0009

Unit

Arg. of Perihelion (ω)

Value

259.3341

1-sigma variation

0.0211

Unit

Mean Anomaly (M)

Value

211.33943

1-sigma variation

0.04947

Unit

Perihelion distance

Value

0.925254

1-sigma variation

Unit

Aphelion distance

Value

1.204650

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.086552

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.008135

1-sigma variation

Unit

MOID

Value

0.006499

1-sigma variation

Unit

Orbit Period

Value

401.4148

1-sigma variation

Unit

U parameter

Value

6.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.57901E-8	1.81552E-8	1.18741E-6	6.20668E-8	-2.57960E-6	6.21463E-6
e	1.81552E-8	2.15076E-8	1.40243E-6	5.15465E-8	-2.84115E-6	7.11601E-6
i	1.18741E-6	1.40243E-6	9.14813E-5	3.50270E-6	-1.86651E-4	4.65603E-4
Ω	6.20668E-8	5.15465E-8	3.50270E-6	8.72877E-7	-1.40474E-5	2.53432E-5
ω	-2.57960E-6	-2.84115E-6	-1.86651E-4	-1.40474E-5	4.46057E-4	-1.02110E-3
M	6.21463E-6	7.11601E-6	4.65603E-4	2.53432E-5	-1.02110E-3	2.44734E-3

Date of computation: 2025-07-31 14:13 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

24.825

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

29 - 60*

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

0.530352

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-26.360266

Unit

Source

[2]

Last Observation

Value

2025-07-30.9433

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

35 (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 2025OT4 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	1959-01-17 17:28	90.1	0.0919285	0.0837184	0.0029020
EARTH	1969-08-10 03:39	387.9	0.0272596	0.0147108	0.0042795
EARTH	1970-02-25 23:16	> 1 d	0.1900180	0.1834702	0.0022104
EARTH	1980-08-03 17:58	> 1 d	0.0756203	0.0154395	0.0201708
EARTH	1993-01-16 09:34	22.0	0.1065183	0.0790911	0.0106365
EARTH	2004-01-24 16:23	28.3	0.0815589	0.0801848	0.0004591
EARTH	2014-08-12 08:25	1268.5	0.0545345	0.0189247	0.0119348
EARTH	2015-02-19 17:44	> 1 d	0.1741246	0.1541963	0.0070888
EARTH	2025-08-07 17:33	1.5	0.0099338	0.0099000	0.0000113
EARTH	2037-08-03 11:03	935.3	0.0872859	0.0445071	0.0142742
EARTH	2039-01-20 22:45	359.7	0.1971672	0.1579998	0.0132227
EARTH	2051-01-19 19:51	90.6	0.0752670	0.0623190	0.0052597
EARTH	2063-01-22 20:35	216.8	0.0599983	0.0589906	0.0003840
EARTH	2074-10-10 23:54	> 1 w	0.1642848	0.1503340	0.0051235
EARTH	2075-02-01 15:07	> 1 d	0.1089952	0.0846146	0.0092512
EARTH	2086-08-13 15:11	> 1 d	0.0826927	0.0300941	0.0175415
EARTH	2087-02-19 12:59	> 1 d	0.1681727	0.1374308	0.0112882
EARTH	2098-08-11 00:33	341.6	0.0458014	0.0345428	0.0037597
EARTH	2099-02-26 23:42	> 1 d	0.1884083	0.1816521	0.0022692
EARTH	2110-08-20 17:24	> 1 d	0.1261080	0.0610549	0.0217775
EARTH	2111-02-09 16:56	> 1 d	0.1376136	0.1009890	0.0148080
EARTH	2123-01-24 23:29	> 1 d	0.0732276	0.0613101	0.0185038

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
289.32335908	213.96798580	0.00649903	MINIMUM
77.19083203	16.00470374	0.06590451	MINIMUM
5.41951459	298.44093996	0.16329221	SADDLE
182.54097186	112.81532519	0.26117321	SADDLE
354.09977185	105.47667930	1.92471226	SADDLE
172.91771455	284.25543782	2.19321761	MAXIMUM

Download:

MOID Plots

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