Asteroids

2025FR18 help

Last update: 2025-04-15 07:30 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.664

Aphelion (Q)

4.649

Eccentricity (e)

0.750

Inclination (i)

10.0

deg

Orbit period (P)

1581.5

Earth MOID

0.04465

U parameter

8.1

Next Earth close approach

Date

2025-04-25

Nominal distance (from Earth center)

0.06829

10215985

Maximum Brightness

20.6

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

22.5

mag

Diameter

80 - 190*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-03-29

Observatory

Pan-STARRS 1, Haleakala

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

2.656506

1-sigma variation

0.006053

Unit

Eccentricity (e)

Value

0.750095

1-sigma variation

0.000644

Unit

Inclination (i)

Value

10.0279

1-sigma variation

0.0057

Unit

Long. of Ascending Node (Ω)

Value

45.6158

1-sigma variation

0.0036

Unit

Arg. of Perihelion (ω)

Value

242.5914

1-sigma variation

0.0020

Unit

Mean Anomaly (M)

Value

352.57783

1-sigma variation

0.02873

Unit

Perihelion distance

Value

0.663873

1-sigma variation

Unit

Aphelion distance

Value

4.649138

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.783329

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.145025

1-sigma variation

Unit

MOID

Value

0.044649

1-sigma variation

Unit

Orbit Period

Value

1581.4832

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.66436E-5	3.89556E-6	3.46060E-5	1.69008E-5	-6.71118E-6	1.73924E-4
e	3.89556E-6	4.14136E-7	3.67880E-6	1.79800E-6	-7.14163E-7	1.84896E-5
i	3.46060E-5	3.67880E-6	3.27759E-5	1.52563E-5	-5.84541E-6	1.64311E-4
Ω	1.69008E-5	1.79800E-6	1.52563E-5	1.31705E-5	-6.80345E-6	7.97680E-5
ω	-6.71118E-6	-7.14163E-7	-5.84541E-6	-6.80345E-6	3.84252E-6	-3.15471E-5
M	1.73924E-4	1.84896E-5	1.64311E-4	7.97680E-5	-3.15471E-5	8.25543E-4

Date of computation: 2025-04-10 10:21 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

22.502

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

80 - 190*

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

0.477295

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-03-29.379488

Unit

Source

[2]

Last Observation

Value

2025-04-09.272711

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

33 (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 2025FR18 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	1973-10-05 21:04	> 1 mo	0.1618124	0.1348220	2.2304501
VENUS	1986-07-29 19:20	> 1 mo	0.0489835	0.0472020	0.3503514
EARTH	1986-10-01 05:36	> 1 mo	0.1361348	0.1354215	0.1286576
VENUS	2012-05-27 04:10	> 1 w	0.0471808	0.0435663	0.0823121
EARTH	2025-04-25 11:24	< 1 min	0.0682960	0.0681753	0.0000402
EARTH	2038-05-02 20:32	> 1 w	0.1387127	0.0488745	0.1626780
EARTH	2051-04-27 10:34	> 1 w	0.1184105	0.0422703	0.2884565
EARTH	2094-10-10 16:21	> 1 d	0.1713021	0.0827947	0.1117489

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
326.61254862	108.40012002	0.04465368	MINIMUM
34.67387966	266.45738917	0.11035232	MINIMUM
1.47337647	189.79180123	0.37542735	SADDLE
0.23737199	6.39976871	1.64277146	SADDLE
180.15220350	5.64772151	3.68219231	SADDLE
179.86856101	185.53936543	5.65710972	MAXIMUM

Download:

MOID Plots

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