Asteroids

2016PA40 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.723

Aphelion (Q)

1.300

Eccentricity (e)

0.285

Inclination (i)

10.5

deg

Orbit period (P)

371.7

Earth MOID

0.03320

U parameter

6.7

Next Earth close approach

Date

2027-03-27

Nominal distance (from Earth center)

0.14628

21882678

Maximum Brightness

24.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.5

mag

Diameter

30 - 80*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2016-08-10

Observatory

Pan-STARRS 1, Haleakala

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

1.011682

1-sigma variation

0.000068

Unit

Eccentricity (e)

Value

0.285374

1-sigma variation

0.000124

Unit

Inclination (i)

Value

10.4680

1-sigma variation

0.0051

Unit

Long. of Ascending Node (Ω)

Value

327.5258

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

118.3894

1-sigma variation

0.0014

Unit

Mean Anomaly (M)

Value

139.81509

1-sigma variation

0.28514

Unit

Perihelion distance

Value

0.722974

1-sigma variation

Unit

Aphelion distance

Value

1.300390

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.062972

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.169616

1-sigma variation

Unit

MOID

Value

0.033199

1-sigma variation

Unit

Orbit Period

Value

371.6758

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.68496E-9	8.48898E-9	3.49916E-7	-3.02103E-8	9.63322E-8	-1.95173E-5
e	8.48898E-9	1.53823E-8	6.34062E-7	-5.47387E-8	1.74579E-7	-3.53646E-5
i	3.49916E-7	6.34062E-7	2.61363E-5	-2.25634E-6	7.19634E-6	-1.45773E-3
Ω	-3.02103E-8	-5.47387E-8	-2.25634E-6	1.94860E-7	-6.21186E-7	1.25855E-4
ω	9.63322E-8	1.74579E-7	7.19634E-6	-6.21186E-7	1.98237E-6	-4.01315E-4
M	-1.95173E-5	-3.53646E-5	-1.45773E-3	1.25855E-4	-4.01315E-4	8.13079E-2

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

24.477

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

30 - 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

Unit

Source

[1]

Unobserved

Value

3503

Unit

Source

[1]

Normalized RMS of residuals

Value

0.601391

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2016-08-07.531

Unit

Source

[2]

Last Observation

Value

2016-09-06.18175

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

100 (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 2016PA40 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	1956-08-25 13:55	> 1 d	0.1408082	0.0314241	0.1190063
EARTH	1957-08-29 00:25	> 1 d	0.0453236	0.0317714	0.0875166
EARTH	1958-08-29 20:10	> 1 d	0.0731932	0.0333858	0.1046923
EARTH	1959-08-21 12:21	> 1 w	0.1642375	0.0573812	0.0936977
VENUS	1966-01-24 05:42	> 1 d	0.0459979	0.0459898	0.0010149
EARTH	1967-03-04 17:09	> 1 w	0.1378978	0.1134545	0.0283504
EARTH	1968-03-18 09:40	> 1 d	0.1048721	0.1045126	0.0041561
EARTH	1969-03-27 08:05	> 1 d	0.1553012	0.1084189	0.0359427
VENUS	1992-07-08 06:42	870.1	0.0456097	0.0455940	0.0002767
EARTH	2014-08-24 08:51	44.6	0.1946068	0.1919261	0.0008937
EARTH	2015-08-28 07:06	21.7	0.0927399	0.0914268	0.0004381
EARTH	2016-08-29 19:11	< 1 s	0.0372141	0.0371621	0.0000174
EARTH	2017-08-26 16:34	48.5	0.1243762	0.1230607	0.0004387
VENUS	2018-12-21 16:08	82.5	0.0454826	0.0453523	0.0000657
EARTH	2025-03-01 15:25	1305.4	0.1469785	0.1403228	0.0023302
EARTH	2026-03-17 16:54	686.1	0.1055393	0.1054849	0.0001479
EARTH	2027-03-27 03:37	474.1	0.1462767	0.1359994	0.0035946
EARTH	2072-08-27 10:40	535.1	0.1032273	0.0681392	0.0121149
EARTH	2073-08-30 03:42	148.9	0.0356742	0.0346560	0.0028183
EARTH	2074-08-27 16:21	> 1 d	0.1174823	0.0814432	0.0124256
VENUS	2074-12-14 21:21	1339.5	0.0443030	0.0442799	0.0005156
EARTH	2082-02-27 13:37	> 1 w	0.1546863	0.1225992	0.0257477
EARTH	2083-03-16 18:18	> 1 d	0.1075407	0.1063594	0.0071655
EARTH	2084-03-25 16:47	> 1 d	0.1378822	0.1088788	0.0327304

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
266.76705819	235.62575660	0.03292984	MINIMUM
75.30034251	75.12716656	0.10612589	MINIMUM
350.74508568	333.10693748	0.29830022	SADDLE
171.37703620	158.23003797	0.34089290	SADDLE
357.06128493	161.49479336	1.73474294	SADDLE
180.53078693	345.23153985	2.27711114	MAXIMUM

Download:

MOID Plots

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