Asteroids

2025ON2 help

Last update: 2025-07-30 13:15 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

1.010

Aphelion (Q)

1.715

Eccentricity (e)

0.259

Inclination (i)

17.1

deg

Orbit period (P)

580.8

Earth MOID

0.00205

U parameter

7.9

Next Earth close approach

Date

2033-07-10

Nominal distance (from Earth center)

0.10787

16137634

Maximum Brightness

22.1

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

23.8

mag

Diameter

50 - 100*

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

1.362303

1-sigma variation

0.001075

Unit

Eccentricity (e)

Value

0.258830

1-sigma variation

0.000588

Unit

Inclination (i)

Value

17.0675

1-sigma variation

0.0222

Unit

Long. of Ascending Node (Ω)

Value

298.6836

1-sigma variation

0.0016

Unit

Arg. of Perihelion (ω)

Value

344.1118

1-sigma variation

0.0077

Unit

Mean Anomaly (M)

Value

320.32073

1-sigma variation

0.04046

Unit

Perihelion distance

Value

1.009698

1-sigma variation

Unit

Aphelion distance

Value

1.714909

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.002092

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.708003

1-sigma variation

Unit

MOID

Value

0.002046

1-sigma variation

Unit

Orbit Period

Value

580.7767

1-sigma variation

Unit

U parameter

Value

7.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.15533E-6	6.31645E-7	2.38205E-5	-1.72513E-6	8.24733E-6	4.34915E-5
e	6.31645E-7	3.45335E-7	1.30232E-5	-9.43171E-7	4.50898E-6	2.37779E-5
i	2.38205E-5	1.30232E-5	4.91138E-4	-3.55684E-5	1.70033E-4	8.96712E-4
Ω	-1.72513E-6	-9.43171E-7	-3.55684E-5	2.57603E-6	-1.23153E-5	-6.49414E-5
ω	8.24733E-6	4.50898E-6	1.70033E-4	-1.23153E-5	5.89013E-5	3.10450E-4
M	4.34915E-5	2.37779E-5	8.96712E-4	-6.49414E-5	3.10450E-4	1.63722E-3

Date of computation: 2025-07-30 13:15 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

23.807

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

50 - 100*

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

0.755056

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-07-23.190243

Unit

Source

[2]

Last Observation

Value

2025-07-30.11211

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

49 (2)

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 2025ON2 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	1955-08-05 18:36	> 1 w	0.1714369	0.0204486	0.2264671
EARTH	1963-07-18 12:35	> 1 w	0.0338171	0.0009106	0.1005606
EARTH	1990-08-02 10:50	> 1 w	0.1318556	0.0132276	0.2052517
EARTH	1998-07-05 11:23	> 1 w	0.1496417	0.0271168	0.1768854
EARTH	2025-07-23 06:37	< 1 min	0.0185791	0.0184963	0.0000276
EARTH	2033-07-11 14:39	> 1 d	0.0938209	0.0096979	0.0560182
EARTH	2084-07-27 09:49	> 1 w	0.0644637	0.0029336	0.1890809
EARTH	2092-07-18 02:58	> 1 d	0.0316304	0.0000988	0.0234827

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
12.17653588	196.65245845	0.00204511	MINIMUM
171.31732564	354.83879036	0.74121084	SADDLE
357.24977768	357.73631099	1.99136474	SADDLE
181.60394873	182.38555998	2.72875823	MAXIMUM

Download:

MOID Plots

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