Asteroids

2016FB4 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.742

Aphelion (Q)

1.561

Eccentricity (e)

0.356

Inclination (i)

33.0

deg

Orbit period (P)

451.4

Earth MOID

0.18931

U parameter

7.6

Next Earth close approach

Date

2074-09-23

Nominal distance (from Earth center)

0.19125

28610664

Maximum Brightness

27.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.9

mag

Diameter

110 - 250*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2016-03-18

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

1.151606

1-sigma variation

0.000322

Unit

Eccentricity (e)

Value

0.355718

1-sigma variation

0.000130

Unit

Inclination (i)

Value

32.9506

1-sigma variation

0.0266

Unit

Long. of Ascending Node (Ω)

Value

355.4515

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

315.4215

1-sigma variation

0.0220

Unit

Mean Anomaly (M)

Value

0.85905

1-sigma variation

1.20036

Unit

Perihelion distance

Value

0.741959

1-sigma variation

Unit

Aphelion distance

Value

1.561253

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.202805

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.352760

1-sigma variation

Unit

MOID

Value

0.189314

1-sigma variation

Unit

Orbit Period

Value

451.3925

1-sigma variation

Unit

U parameter

Value

7.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.03492E-7	4.18981E-8	8.57133E-6	1.40761E-7	-7.08953E-6	-3.86158E-4
e	4.18981E-8	1.69756E-8	3.46982E-6	5.69935E-8	-2.87066E-6	-1.56332E-4
i	8.57133E-6	3.46982E-6	7.10035E-4	1.16596E-5	-5.87022E-4	-3.19824E-2
Ω	1.40761E-7	5.69935E-8	1.16596E-5	1.91558E-7	-9.64149E-6	-5.25221E-4
ω	-7.08953E-6	-2.87066E-6	-5.87022E-4	-9.64149E-6	4.85811E-4	2.64528E-2
M	-3.86158E-4	-1.56332E-4	-3.19824E-2	-5.25221E-4	2.64528E-2	1.44087E0

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

21.889

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

110 - 250*

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

3651

Unit

Source

[1]

Normalized RMS of residuals

Value

0.488082

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2016-03-07.4683

Unit

Source

[2]

Last Observation

Value

2016-03-31.17939

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

39 (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

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 2016FB4 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	1964-09-19 14:27	> 1 w	0.1992034	0.1912965	0.0385931
EARTH	1985-09-27 11:00	> 1 w	0.1894724	0.1887318	0.0072399
EARTH	2074-09-23 12:32	> 1 w	0.1912505	0.1893984	0.0173256
EARTH	2095-09-23 02:30	> 1 w	0.1925943	0.1897670	0.0374657
EARTH	2116-10-01 04:25	> 1 w	0.1955076	0.1904440	0.0625702

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
37.95036903	262.43025039	0.18908717	MINIMUM
262.12831780	88.04862078	0.27427672	MINIMUM
329.33996555	166.23229727	0.55592145	SADDLE
149.44415888	12.03717754	0.81341120	SADDLE
346.59773525	14.77193652	1.68201523	SADDLE
188.36304910	219.68686667	2.53389217	MAXIMUM

Download:

MOID Plots

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