Asteroids

363163 2001SE286 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.108

Aphelion (Q)

2.965

Eccentricity (e)

0.456

Inclination (i)

26.8

deg

Orbit period (P)

1061.4

Earth MOID

0.14048

U parameter

0.1

Next Earth close approach

Date

2094-12-19

Nominal distance (from Earth center)

0.18087

27057860

Maximum Brightness

15.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

17.6

mag

Diameter

800 - 1800*

Taxonomic type

Rotation period (T)

9.323

Discovery Information

Discovery Date

2001-09-27

Observatory

Lincoln Laboratory ETS, New Mexico

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

2.036344

1-sigma variation

1.023E-8

Unit

Eccentricity (e)

Value

0.455956

1-sigma variation

3.382E-8

Unit

Inclination (i)

Value

26.7669

1-sigma variation

8.312E-6

Unit

Long. of Ascending Node (Ω)

Value

268.4496

1-sigma variation

1.381E-5

Unit

Arg. of Perihelion (ω)

Value

199.3914

1-sigma variation

3.141E-5

Unit

Mean Anomaly (M)

Value

78.71266

1-sigma variation

0.00003

Unit

Perihelion distance

Value

1.107860

1-sigma variation

Unit

Aphelion distance

Value

2.964828

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.812648

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.143920

1-sigma variation

Unit

MOID

Value

0.140479

1-sigma variation

Unit

Orbit Period

Value

1061.3904

1-sigma variation

Unit

U parameter

Value

0.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.04695E-16	2.84031E-16	2.70850E-14	4.57355E-15	2.64367E-13	-3.25797E-13
e	2.84031E-16	1.14382E-15	7.68150E-14	1.14766E-13	8.18721E-13	-9.27207E-13
i	2.70850E-14	7.68150E-14	6.90853E-11	-4.70357E-12	7.82437E-11	-8.53967E-11
Ω	4.57355E-15	1.14766E-13	-4.70357E-12	1.90795E-10	-1.36527E-10	-2.21794E-11
ω	2.64367E-13	8.18721E-13	7.82437E-11	-1.36527E-10	9.86501E-10	-8.93049E-10
M	-3.25797E-13	-9.27207E-13	-8.53967E-11	-2.21794E-11	-8.93049E-10	1.04831E-9

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

9.323

Unit

Source

[1]

[2]

Quality

Value

Unit

Source

[1]

Amplitude

Value

0.4

0.14

Unit

mag

Source

[1]

[2]

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

17.572

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

800 - 1800*

Unit

Source

[4]

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

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[2]	EARN	1.) Pravec, P.; Wolf, M.; Sarounova, L. (2001) http://www.asu.cas.cz/~ppravec/neo.htm
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude
[5]	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

8575

Unit

Source

[1]

Unobserved

Value

215

Unit

Source

[1]

Normalized RMS of residuals

Value

0.488184

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2001-09-27.40074

Unit

Source

[2]

Last Observation

Value

2025-03-20.126783

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

310 (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

2001-12-18

Unit

Source

[3]

Last Observation

Value

2001-12-18

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (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 363163 2001SE286 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	2001-12-22 00:06	< 1 min	0.1436686	0.1436685	0.0000000
10 Hygiea	2011-10-15 04:21	< 1 min	0.0146444	0.0146419	0.0000008
EARTH	2094-12-19 22:01	< 1 min	0.1808706	0.1808646	0.0000020
EARTH	2123-12-23 15:38	< 1 min	0.1393318	0.1393289	0.0000010

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
350.17913127	349.38712225	0.14022260	MINIMUM
184.19538303	186.03609235	1.96799372	SADDLE
4.85895935	190.81284220	2.11561068	SADDLE
178.31641420	2.72874077	3.94056873	MAXIMUM

Download:

MOID Plots

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