Asteroids

367789 2011AG5 help

Last update: 2026-07-30 09:40 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.871

Aphelion (Q)

1.977

Eccentricity (e)

0.388

Inclination (i)

3.7

deg

Orbit period (P)

620.8

Earth MOID

0.00024

U parameter

0.0

Next Earth close approach

Date

2028-06-11

Nominal distance (from Earth center)

0.13422

20079746

Maximum Brightness

20.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.8

mag

Diameter

110 - 260*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2011-01-08

Observatory

University of Arizona 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.424173

1-sigma variation

1.107E-9

Unit

Eccentricity (e)

Value

0.388319

1-sigma variation

1.694E-8

Unit

Inclination (i)

Value

3.6944

1-sigma variation

4.068E-6

Unit

Long. of Ascending Node (Ω)

Value

135.5912

1-sigma variation

9.144E-6

Unit

Arg. of Perihelion (ω)

Value

54.0284

1-sigma variation

1.022E-5

Unit

Mean Anomaly (M)

Value

324.10771

1-sigma variation

1.415E-6

Unit

Perihelion distance

Value

0.871140

1-sigma variation

Unit

Aphelion distance

Value

1.977206

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.001006

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.552342

1-sigma variation

Unit

MOID

Value

0.000239

1-sigma variation

Unit

Orbit Period

Value

620.7869

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.22477E-18	-2.18897E-18	5.08295E-16	2.95914E-16	-1.12669E-15	-6.06974E-16
e	-2.18897E-18	2.87038E-16	-3.69367E-15	1.02966E-14	6.80387E-14	-2.06124E-14
i	5.08295E-16	-3.69367E-15	1.65471E-11	-2.52015E-11	2.39774E-11	1.04841E-13
Ω	2.95914E-16	1.02966E-14	-2.52015E-11	8.36100E-11	-8.32481E-11	3.33440E-14
ω	-1.12669E-15	6.80387E-14	2.39774E-11	-8.32481E-11	1.04465E-10	-5.58636E-12
M	-6.06974E-16	-2.06124E-14	1.04841E-13	3.33440E-14	-5.58636E-12	2.00126E-12

Date of computation: 2026-07-30 09:40 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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

21.82

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

110 - 260*

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

Unit

Source

[-]

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]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

5397

Unit

Source

[1]

Unobserved

Value

1118

Unit

Source

[1]

Normalized RMS of residuals

Value

0.621578

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2008-10-03.42373

Unit

Source

[2]

Last Observation

Value

2023-07-14.33235

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

443 (8)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2023-01-29

Unit

Source

[3]

Last Observation

Value

2023-02-03

Unit

Source

[3]

Delay (Discarded)

Value

4 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (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

Filters

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Final Date: *

Normalised Only accepted

Max residual (arcsec):

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Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

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Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 367789 2011AG5 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1958-01-26 12:38	< 1 min	0.0953478	0.0953472	0.0000002
EARTH	1975-06-07 13:58	< 1 min	0.0938223	0.0938217	0.0000002
EARTH	1987-05-24 14:38	< 1 min	0.0747018	0.0747015	0.0000001
EARTH	1999-04-13 05:58	< 1 min	0.1359041	0.1359040	0.0000000
EARTH	2011-02-26 15:21	< 1 min	0.0956682	0.0956680	0.0000001
EARTH	2023-02-03 08:49	< 1 s	0.0121452	0.0121452	0.0000000
EARTH	2028-06-11 12:46	< 1 s	0.1342248	0.1342245	0.0000001
EARTH	2040-02-04 08:44	< 1 min	0.0072478	0.0072475	0.0000001
EARTH	2045-04-09 00:29	3.2	0.1404321	0.1404316	0.0000002
EARTH	2050-06-08 01:19	1.2	0.0756368	0.0756171	0.0000066
EARTH	2077-02-11 10:46	8.1	0.0451770	0.0450879	0.0000297
EARTH	2082-05-14 21:27	< 1 min	0.1053101	0.1053080	0.0000007
EARTH	2109-02-15 03:19	39.8	0.0567911	0.0564213	0.0001232
EARTH	2114-05-25 23:52	21.1	0.0815955	0.0814644	0.0000437

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
322.44345870	30.48140395	0.00023880	MINIMUM
42.73264675	145.75717324	0.05939862	MINIMUM
4.57017489	90.94887969	0.13799042	SADDLE
181.41333111	266.58005811	0.97874999	SADDLE
2.73944522	268.19007756	1.87147998	SADDLE
181.05392921	86.34014139	2.97510010	MAXIMUM

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MOID Plots

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