Asteroids

523788 2015FP118 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.955

Aphelion (Q)

3.289

Eccentricity (e)

0.550

Inclination (i)

2.7

deg

Orbit period (P)

1129.1

Earth MOID

0.02972

U parameter

0.0

Next Earth close approach

Date

2052-07-06

Nominal distance (from Earth center)

0.05536

8282388

Maximum Brightness

17.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.4

mag

Diameter

300 - 800*

Taxonomic type

Scomp

Rotation period (T)

3.092

Discovery Information

Discovery Date

2015-03-21

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.122048

1-sigma variation

1.128E-8

Unit

Eccentricity (e)

Value

0.550044

1-sigma variation

6.229E-9

Unit

Inclination (i)

Value

2.6776

1-sigma variation

1.664E-6

Unit

Long. of Ascending Node (Ω)

Value

201.1942

1-sigma variation

3.090E-5

Unit

Arg. of Perihelion (ω)

Value

108.3678

1-sigma variation

3.107E-5

Unit

Mean Anomaly (M)

Value

128.96019

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.954828

1-sigma variation

Unit

Aphelion distance

Value

3.289268

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.786141

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.264135

1-sigma variation

Unit

MOID

Value

0.029724

1-sigma variation

Unit

Orbit Period

Value

1129.0970

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.27312E-16	1.91866E-17	-7.18848E-17	6.58805E-15	-6.30457E-15	-7.68539E-14
e	1.91866E-17	3.87948E-17	-2.75218E-15	4.09374E-14	-5.47636E-14	-7.94619E-15
i	-7.18848E-17	-2.75218E-15	2.76997E-12	-5.11713E-11	5.11712E-11	1.57272E-13
Ω	6.58805E-15	4.09374E-14	-5.11713E-11	9.54720E-10	-9.55031E-10	-6.01022E-12
ω	-6.30457E-15	-5.47636E-14	5.11712E-11	-9.55031E-10	9.65582E-10	3.09220E-12
M	-7.68539E-14	-7.94619E-15	1.57272E-13	-6.01022E-12	3.09220E-12	4.71358E-11

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

3.092

Unit

Source

[1]

Quality

Value

Unit

Source

[-]

Amplitude

Value

0.13

Unit

mag

Source

[1]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Scomp

Unit

Source

[2]

Taxonomy (all)

Value

Unit

Source

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.441

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[5]

Diameter

Value

300 - 800*

Unit

Source

[5]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[6]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Near-Earth Asteroid Lightcurve Analysis at the Center for Solar System Studies: 2018 July-September, B.D. Warner
[2]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	Estimation	Estimated from absolute magnitude
[6]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

3307

Unit

Source

[1]

Unobserved

Value

563

Unit

Source

[1]

Normalized RMS of residuals

Value

0.406335

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2015-03-21.57498

Unit

Source

[2]

Last Observation

Value

2024-04-09.391384

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

736 (7)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2018-08-24

Unit

Source

[3]

Last Observation

Value

2018-09-02

Unit

Source

[3]

Delay (Discarded)

Value

4 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

4 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 523788 2015FP118 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	1950-08-13 13:26	< 1 min	0.0680563	0.0680560	0.0000001
EARTH	1984-08-18 10:12	< 1 min	0.0583314	0.0583303	0.0000004
MARS	2009-07-30 17:43	< 1 min	0.0285203	0.0285192	0.0000004
EARTH	2018-09-03 10:08	< 1 s	0.0314387	0.0314387	0.0000000
EARTH	2052-07-06 23:19	< 1 min	0.0553643	0.0553626	0.0000006
EARTH	2086-08-04 22:33	1.9	0.0744699	0.0744687	0.0000004
MARS	2096-02-07 07:37	< 1 min	0.0354586	0.0354511	0.0000025
EARTH	2120-07-02 20:05	< 1 min	0.0509924	0.0509905	0.0000006

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
18.05308807	240.96388829	0.03000539	MINIMUM
341.09688606	172.81919319	0.04562508	MINIMUM
358.49678136	204.92247112	0.07406517	SADDLE
359.31883669	26.45985246	1.93993839	SADDLE
179.78239692	27.04886268	2.30318488	SADDLE
179.81344170	207.06178159	4.30093244	MAXIMUM

Download:

MOID Plots

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