Asteroids

2016QA2 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.717

Aphelion (Q)

1.174

Eccentricity (e)

0.242

Inclination (i)

14.8

deg

Orbit period (P)

335.9

Earth MOID

0.00008

U parameter

4.3

Next Earth close approach

Date

2038-03-08

Nominal distance (from Earth center)

0.17173

25690175

Maximum Brightness

28.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

27 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2016-08-27

Observatory

SONEAR Observatory, Oliveira

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

0.945690

1-sigma variation

0.000002

Unit

Eccentricity (e)

Value

0.241880

1-sigma variation

0.000003

Unit

Inclination (i)

Value

14.7569

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

334.8217

1-sigma variation

2.680E-6

Unit

Arg. of Perihelion (ω)

Value

119.5763

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

280.68134

1-sigma variation

0.00853

Unit

Perihelion distance

Value

0.716946

1-sigma variation

Unit

Aphelion distance

Value

1.174433

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.000105

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.194959

1-sigma variation

Unit

MOID

Value

0.000076

1-sigma variation

Unit

Orbit Period

Value

335.9087

1-sigma variation

Unit

U parameter

Value

4.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.54353E-12	3.52748E-12	4.36196E-10	3.82777E-12	-6.98886E-10	-1.36069E-8
e	3.52748E-12	7.42211E-12	8.12561E-10	7.11006E-12	-9.95136E-10	-1.85366E-8
i	4.36196E-10	8.12561E-10	9.45090E-8	8.20738E-10	-1.21970E-7	-2.30610E-6
Ω	3.82777E-12	7.11006E-12	8.20738E-10	7.18101E-12	-1.07016E-9	-2.02394E-8
ω	-6.98886E-10	-9.95136E-10	-1.21970E-7	-1.07016E-9	1.92298E-7	3.73536E-6
M	-1.36069E-8	-1.85366E-8	-2.30610E-6	-2.02394E-8	3.73536E-6	7.28361E-5

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

24.999

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

27 - 60*

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

3310

Unit

Source

[1]

Normalized RMS of residuals

Value

0.957451

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2016-08-27.25854

Unit

Source

[2]

Last Observation

Value

2016-08-29.82299

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

107 (6)

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 2016QA2 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	1950-08-29 04:49	46.5	0.0415772	0.0337080	0.0026231
EARTH	1969-03-10 00:18	17.8	0.1157244	0.1156517	0.0000243
EARTH	1971-08-29 04:25	7.3	0.0234609	0.0225864	0.0002915
EARTH	1991-03-08 02:31	31.8	0.1145373	0.1144705	0.0000226
EARTH	1993-08-29 01:24	3.5	0.0451104	0.0444659	0.0002148
EARTH	2014-02-27 04:58	8.9	0.1340401	0.1339882	0.0000173
EARTH	2016-08-28 01:25	< 1 s	0.0005787	0.0005787	0.0000000
EARTH	2038-03-08 06:27	88.5	0.1717282	0.1714686	0.0000872
EARTH	2039-08-28 13:22	8.0	0.0193037	0.0183740	0.0003099
VENUS	2049-02-21 00:49	113.4	0.0400700	0.0397018	0.0003052
EARTH	2049-03-26 22:46	345.4	0.1665362	0.1654408	0.0003992
EARTH	2050-08-27 12:50	161.3	0.1069038	0.0990585	0.0026158
EARTH	2073-08-24 10:34	366.4	0.1530903	0.1279578	0.0083778
EARTH	2083-03-02 20:18	> 1 d	0.1872192	0.1800202	0.0028160
EARTH	2084-08-26 08:39	286.9	0.0842648	0.0617496	0.0075063
EARTH	2094-03-08 23:34	905.8	0.1741333	0.1721193	0.0007397
EARTH	2095-08-28 02:11	65.2	0.0464396	0.0401019	0.0021129
VENUS	2105-02-14 23:43	336.2	0.0414538	0.0384152	0.0024008
EARTH	2105-03-10 19:44	> 1 d	0.1734692	0.1695294	0.0015488
EARTH	2106-08-29 01:42	242.4	0.0411795	0.0188356	0.0074781
EARTH	2117-08-25 21:37	245.7	0.1435778	0.1275088	0.0053567

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
253.56917932	233.48137034	0.00093406	MINIMUM
71.90807126	76.11912966	0.15843106	MINIMUM
159.06628971	155.81493026	0.30733715	SADDLE
345.08120213	334.05619187	0.33684335	SADDLE
355.43247353	167.32608840	1.72191700	SADDLE
182.89014772	355.21310445	2.14511379	MAXIMUM

Download:

MOID Plots

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