Asteroids

444193 2005SE71 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.862

Aphelion (Q)

1.277

Eccentricity (e)

0.194

Inclination (i)

24.8

deg

Orbit period (P)

404.0

Earth MOID

0.00228

U parameter

0.0

Next Earth close approach

Date

2027-11-08

Nominal distance (from Earth center)

0.19002

28427204

Maximum Brightness

17.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.2

mag

Diameter

560

Taxonomic type

Rotation period (T)

66.80

Discovery Information

Discovery Date

2005-09-30

Observatory

Mt. Lemmon Survey

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

1.069553

1-sigma variation

1.776E-9

Unit

Eccentricity (e)

Value

0.194414

1-sigma variation

3.693E-8

Unit

Inclination (i)

Value

24.8325

1-sigma variation

1.254E-5

Unit

Long. of Ascending Node (Ω)

Value

39.0975

1-sigma variation

4.153E-6

Unit

Arg. of Perihelion (ω)

Value

78.2952

1-sigma variation

4.359E-6

Unit

Mean Anomaly (M)

Value

19.15632

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.861617

1-sigma variation

Unit

Aphelion distance

Value

1.277489

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.002457

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.062679

1-sigma variation

Unit

MOID

Value

0.002279

1-sigma variation

Unit

Orbit Period

Value

404.0192

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.15416E-18	4.20497E-17	-2.86296E-15	7.44351E-16	-2.13518E-15	-1.47848E-14
e	4.20497E-17	1.36409E-15	6.03876E-14	-1.77915E-14	-9.79327E-14	-1.86656E-13
i	-2.86296E-15	6.03876E-14	1.57176E-10	-3.72228E-11	2.15958E-11	1.50124E-11
Ω	7.44351E-16	-1.77915E-14	-3.72228E-11	1.72459E-11	-5.36173E-12	-9.58924E-12
ω	-2.13518E-15	-9.79327E-14	2.15958E-11	-5.36173E-12	1.90010E-11	1.06646E-12
M	-1.47848E-14	-1.86656E-13	1.50124E-11	-9.58924E-12	1.06646E-12	8.57865E-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

66.80

Unit

Source

[3]

Quality

Value

2,T,U

Unit

Source

[3]

Amplitude

Value

0.8

Unit

mag

Source

[3]

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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.151

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.5023

0.32

Unit

Source

[6]

[5]

Diameter

Value

560

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

[7]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	EARN	1.) Warner, B.D. (2018) MPB 45, 366-379. (Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2018 April-June)(39 NEAs)
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	EARN	1.) Joseph R. Masiero et al 2020 Planet. Sci. J. 1 5
[6]	EARN	1.) Masiero, J.R. et al. (2018) Astron. J. 154_168(10pp). (NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos) (170NEOs, 6110MBAs)
[7]	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

5379

Unit

Source

[1]

Unobserved

Value

1954

Unit

Source

[1]

Normalized RMS of residuals

Value

0.50011

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2005-09-30.467

Unit

Source

[2]

Last Observation

Value

2020-06-22.189931

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

485 (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

2018-04-26

Unit

Source

[3]

Last Observation

Value

2018-04-26

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 444193 2005SE71 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	1955-04-26 20:11	< 1 s	0.0591504	0.0591499	0.0000002
EARTH	1964-11-03 22:15	< 1 min	0.0735077	0.0735059	0.0000006
EARTH	1976-04-25 19:50	< 1 s	0.0821831	0.0821828	0.0000001
EARTH	1985-11-02 23:48	< 1 min	0.0404654	0.0404642	0.0000004
EARTH	1997-04-26 03:53	< 1 s	0.0717684	0.0717679	0.0000002
EARTH	2006-11-05 14:02	< 1 s	0.1019895	0.1019891	0.0000001
EARTH	2016-10-24 15:43	< 1 s	0.1855918	0.1855914	0.0000001
EARTH	2018-04-27 00:49	< 1 s	0.0615339	0.0615339	0.0000000
EARTH	2027-11-08 19:44	< 1 s	0.1900241	0.1900233	0.0000003
EARTH	2037-10-28 23:35	< 1 min	0.0894783	0.0894772	0.0000004
EARTH	2039-04-28 23:19	< 1 s	0.1249310	0.1249303	0.0000002
EARTH	2049-04-26 17:27	< 1 s	0.1763767	0.1763761	0.0000002
EARTH	2058-10-31 23:56	< 1 s	0.0221269	0.0221262	0.0000002
EARTH	2060-04-29 15:56	< 1 s	0.1710050	0.1710047	0.0000001
EARTH	2079-10-25 19:01	< 1 min	0.1824980	0.1824910	0.0000024
EARTH	2081-04-26 22:17	< 1 min	0.0559610	0.0559600	0.0000003
EARTH	2090-11-04 03:55	< 1 min	0.0587606	0.0587451	0.0000052
EARTH	2102-04-27 12:10	< 1 s	0.1148430	0.1148339	0.0000030
EARTH	2111-11-02 04:18	< 1 min	0.0274277	0.0274228	0.0000016
EARTH	2113-04-30 21:09	< 1 min	0.1591649	0.1591632	0.0000005
EARTH	2122-11-08 11:23	< 1 min	0.1534792	0.1534583	0.0000070

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
292.35476540	297.59544205	0.00209912	MINIMUM
87.24779822	113.14257307	0.05840661	MINIMUM
9.82239345	26.60853030	0.41494261	SADDLE
190.14935033	203.49334176	0.55277174	SADDLE
5.16158155	200.47490420	1.83450063	SADDLE
173.49908890	8.31755361	2.21262746	MAXIMUM

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MOID Plots

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