Asteroids

2005AZ28 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.964

Aphelion (Q)

1.994

Eccentricity (e)

0.348

Inclination (i)

1.6

deg

Orbit period (P)

657.0

Earth MOID

0.02175

U parameter

0.0

Next Earth close approach

Date

2031-10-13

Nominal distance (from Earth center)

0.03029

4530953

Maximum Brightness

19.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.3

mag

Diameter

40 - 80*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2005-01-15

Observatory

Steward Observatory, Kitt Peak-Spacewatch

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

1.479040

1-sigma variation

5.674E-9

Unit

Eccentricity (e)

Value

0.348175

1-sigma variation

1.301E-7

Unit

Inclination (i)

Value

1.5954

1-sigma variation

6.417E-6

Unit

Long. of Ascending Node (Ω)

Value

310.7400

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

103.6375

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

244.55140

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.964076

1-sigma variation

Unit

Aphelion distance

Value

1.994004

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.399461

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.215910

1-sigma variation

Unit

MOID

Value

0.021746

1-sigma variation

Unit

Orbit Period

Value

657.0041

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.21973E-17	-4.52921E-16	-1.43470E-14	4.53165E-14	-2.94089E-13	1.00786E-13
e	-4.52921E-16	1.69187E-14	4.54503E-14	-2.35092E-12	8.73236E-12	-2.37047E-12
i	-1.43470E-14	4.54503E-14	4.11744E-11	9.41403E-10	-8.12394E-10	-7.21230E-11
Ω	4.53165E-14	-2.35092E-12	9.41403E-10	3.20609E-8	-3.14745E-8	-6.35725E-10
ω	-2.94089E-13	8.73236E-12	-8.12394E-10	-3.14745E-8	3.39613E-8	-6.45024E-10
M	1.00786E-13	-2.37047E-12	-7.21230E-11	-6.35725E-10	-6.45024E-10	5.63586E-10

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

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

24.321

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

40 - 80*

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

6483

Unit

Source

[1]

Unobserved

Value

1110

Unit

Source

[1]

Normalized RMS of residuals

Value

0.62887

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2005-01-15.37295

Unit

Source

[2]

Last Observation

Value

2022-10-15.896816

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

57 (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 2005AZ28 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	1950-10-08 14:12	4.5	0.0457854	0.0457406	0.0000149
EARTH	1959-10-19 20:45	1.1	0.0248077	0.0248070	0.0000002
EARTH	1968-10-22 11:46	< 1 min	0.0264727	0.0264721	0.0000002
EARTH	1977-10-28 23:52	< 1 min	0.0309154	0.0309141	0.0000004
EARTH	1986-11-16 12:23	1.4	0.0362774	0.0362770	0.0000002
EARTH	1995-12-03 12:43	< 1 min	0.0281600	0.0281597	0.0000001
EARTH	2004-12-01 18:59	< 1 min	0.0288124	0.0288121	0.0000001
EARTH	2013-11-15 04:50	< 1 min	0.0368252	0.0368248	0.0000001
EARTH	2022-10-24 18:54	< 1 min	0.0293693	0.0293690	0.0000001
EARTH	2031-10-13 23:22	< 1 min	0.0302876	0.0302871	0.0000001
EARTH	2040-09-22 01:39	< 1 min	0.1933926	0.1933896	0.0000010
MARS	2065-08-18 14:59	< 1 min	0.0477619	0.0477614	0.0000002
EARTH	2074-12-27 07:10	< 1 min	0.0813992	0.0813897	0.0000031
EARTH	2083-12-02 19:12	< 1 min	0.0281481	0.0281477	0.0000001
EARTH	2092-10-06 07:39	< 1 min	0.0578639	0.0578577	0.0000021

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
17.52591674	337.51004228	0.02172844	MINIMUM
339.19994759	283.46870653	0.02673876	MINIMUM
357.15296303	308.80036213	0.03683230	SADDLE
179.01182952	131.10220402	0.98402924	SADDLE
357.96441512	129.97055399	1.97437039	SADDLE
179.06723305	311.14859096	2.98282721	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out