Asteroids

2016AZ8 help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.852

Aphelion (Q)

1.790

Eccentricity (e)

0.355

Inclination (i)

5.6

deg

Orbit period (P)

554.5

Earth MOID

0.02964

U parameter

0.0

Next Earth close approach

Date

2053-09-03

Nominal distance (from Earth center)

0.09396

14055600

Maximum Brightness

18.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.1

mag

Diameter

200

Taxonomic type

Rotation period (T)

16.90

Discovery Information

Discovery Date

2016-01-03

Observatory

WISE

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

1.320948

1-sigma variation

4.360E-9

Unit

Eccentricity (e)

Value

0.355017

1-sigma variation

2.308E-8

Unit

Inclination (i)

Value

5.5861

1-sigma variation

2.901E-6

Unit

Long. of Ascending Node (Ω)

Value

89.9851

1-sigma variation

1.100E-5

Unit

Arg. of Perihelion (ω)

Value

318.5824

1-sigma variation

1.299E-5

Unit

Mean Anomaly (M)

Value

347.65639

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.851989

1-sigma variation

Unit

Aphelion distance

Value

1.789907

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.072372

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.557293

1-sigma variation

Unit

MOID

Value

0.029641

1-sigma variation

Unit

Orbit Period

Value

554.5326

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.90082E-17	2.81702E-17	7.42177E-16	1.01443E-16	-6.61270E-15	-3.83251E-14
e	2.81702E-17	5.32860E-16	1.47072E-14	8.70467E-14	-2.14653E-13	-1.64487E-14
i	7.42177E-16	1.47072E-14	8.41751E-12	3.08474E-11	-3.12940E-11	-2.19605E-12
Ω	1.01443E-16	8.70467E-14	3.08474E-11	1.20908E-10	-1.27909E-10	-3.81830E-13
ω	-6.61270E-15	-2.14653E-13	-3.12940E-11	-1.27909E-10	1.68624E-10	2.54348E-12
M	-3.83251E-14	-1.64487E-14	-2.19605E-12	-3.81830E-13	2.54348E-12	8.11721E-11

Date of computation: 2026-06-04 23:11 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

16.90

Unit

Source

[1]

Quality

Value

Unit

Source

[-]

Amplitude

Value

0.28

Unit

mag

Source

[1]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

129

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[2]

[3]

Taxonomy (all)

Value

Unit

Source

[4]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

21.061

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.138

Unit

Source

[6]

Diameter

Value

200

Unit

Source

[6]

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.) Near-Earth Asteroid Lightcurve Analysis at the Center for Solar System Studies: 2019 January-April, B.D. Warner
[2]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[3]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[4]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[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)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

4346

Unit

Source

[1]

Unobserved

Value

766

Unit

Source

[1]

Normalized RMS of residuals

Value

0.456533

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2012-07-21.71463

Unit

Source

[2]

Last Observation

Value

2024-06-14.416488

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

376 (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

2019-01-04

Unit

Source

[3]

Last Observation

Value

2019-01-10

Unit

Source

[3]

Delay (Discarded)

Value

4 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

5 (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

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Max residual (arcsec):

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Computation parameters

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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 2016AZ8 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	1968-08-22 06:26	< 1 min	0.1868709	0.1868531	0.0000059
MARS	1971-06-18 20:45	< 1 min	0.0436073	0.0435954	0.0000040
EARTH	1971-09-12 11:51	1.3	0.1082608	0.1082542	0.0000022
EARTH	1974-11-16 07:42	1.9	0.1476041	0.1476021	0.0000007
EARTH	1978-01-06 21:43	< 1 min	0.0286828	0.0286827	0.0000000
EARTH	2009-08-23 23:46	< 1 min	0.1708900	0.1708895	0.0000002
MARS	2010-12-19 09:01	< 1 min	0.0139241	0.0139235	0.0000002
EARTH	2012-09-16 13:44	< 1 min	0.1166045	0.1166042	0.0000001
EARTH	2015-11-18 22:03	< 1 min	0.1458782	0.1458781	0.0000000
EARTH	2019-01-07 06:40	< 1 s	0.0297762	0.0297762	0.0000000
EARTH	2053-09-03 13:42	< 1 min	0.0939559	0.0939557	0.0000001
EARTH	2056-10-27 07:44	< 1 min	0.1536622	0.1536620	0.0000001
EARTH	2059-12-23 08:07	< 1 min	0.0854881	0.0854854	0.0000009
EARTH	2063-01-17 21:35	< 1 min	0.1178653	0.1178617	0.0000012
EARTH	2097-09-08 10:51	< 1 min	0.0983304	0.0983297	0.0000002
EARTH	2100-11-05 09:31	< 1 min	0.1538137	0.1538135	0.0000001
EARTH	2103-12-29 13:24	< 1 min	0.0699313	0.0699283	0.0000010
EARTH	2107-01-19 21:01	< 1 min	0.1267540	0.1267501	0.0000013

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
42.09955324	5.40110876	0.02970122	MINIMUM
310.68610624	240.75921551	0.09363112	MINIMUM
352.03233352	296.89458412	0.15423947	SADDLE
177.88490805	125.48471022	0.78391784	SADDLE
357.04748370	124.09762265	1.86177199	SADDLE
179.09176671	306.33108909	2.77905788	MAXIMUM

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MOID Plots

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