Asteroids

2016MA help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.925

Aphelion (Q)

2.039

Eccentricity (e)

0.376

Inclination (i)

5.1

deg

Orbit period (P)

659.1

Earth MOID

0.00645

U parameter

7.4

Next Earth close approach

Date

2034-08-05

Nominal distance (from Earth center)

0.10549

15780711

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.3

mag

Diameter

9 - 20*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2016-06-16

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.482111

1-sigma variation

0.000475

Unit

Eccentricity (e)

Value

0.375772

1-sigma variation

0.000040

Unit

Inclination (i)

Value

5.0574

1-sigma variation

0.0012

Unit

Long. of Ascending Node (Ω)

Value

92.1511

1-sigma variation

0.0009

Unit

Arg. of Perihelion (ω)

Value

223.2806

1-sigma variation

0.0719

Unit

Mean Anomaly (M)

Value

170.88112

1-sigma variation

0.90638

Unit

Perihelion distance

Value

0.925176

1-sigma variation

Unit

Aphelion distance

Value

2.039047

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.767931

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.016912

1-sigma variation

Unit

MOID

Value

0.006452

1-sigma variation

Unit

Orbit Period

Value

659.0520

1-sigma variation

Unit

U parameter

Value

7.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.25943E-7	1.89875E-8	-5.80922E-7	-4.42374E-7	-3.41567E-5	4.30836E-4
e	1.89875E-8	1.59576E-9	-4.88155E-8	-3.71756E-8	-2.87037E-6	3.62060E-5
i	-5.80922E-7	-4.88155E-8	1.49663E-6	1.13380E-6	8.78249E-5	-1.10772E-3
Ω	-4.42374E-7	-3.71756E-8	1.13380E-6	8.70681E-7	6.68708E-5	-8.43534E-4
ω	-3.41567E-5	-2.87037E-6	8.78249E-5	6.68708E-5	5.16361E-3	-6.51311E-2
M	4.30836E-4	3.62060E-5	-1.10772E-3	-8.43534E-4	-6.51311E-2	8.21534E-1

Date of computation: 2026-03-17 23:26 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

27.348

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

9 - 20*

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

Unit

Source

[1]

Unobserved

Value

3572

Unit

Source

[1]

Normalized RMS of residuals

Value

0.461413

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2016-06-16.28151

Unit

Source

[2]

Last Observation

Value

2016-06-19.302895

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

85 (3)

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

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 2016MA 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	1969-06-05 19:38	> 1 w	0.1323476	0.0124963	0.1047619
EARTH	1978-07-06 09:08	> 1 mo	0.0660211	0.0176740	0.0907412
EARTH	1987-09-20 16:07	> 1 w	0.0859189	0.0857793	0.0040664
EARTH	2016-06-19 04:33	< 1 s	0.0066824	0.0066710	0.0000038
EARTH	2025-06-28 00:30	> 1 d	0.0412512	0.0090329	0.0233281
EARTH	2034-08-05 02:54	> 1 d	0.1054875	0.1036015	0.0006362
EARTH	2043-09-15 22:25	> 1 d	0.0914175	0.0887055	0.0048347
EARTH	2052-10-04 16:49	> 1 d	0.1406793	0.0893322	0.0467177
EARTH	2081-06-03 06:51	> 1 w	0.1812687	0.0128757	0.1263614
EARTH	2090-06-17 10:32	> 1 w	0.0216785	0.0054712	0.1064383
EARTH	2099-06-11 01:27	> 1 mo	0.0854068	0.0079033	0.8936190

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
326.96803166	166.36191924	0.00711306	MINIMUM
29.83828509	258.22143196	0.08838630	MINIMUM
4.62476145	221.56374568	0.10893315	SADDLE
179.86242267	33.62166794	1.05583028	SADDLE
358.86796180	32.87501053	1.91058186	SADDLE
179.15268124	213.13942576	3.05278326	MAXIMUM

Download:

MOID Plots

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