Asteroids

2018FD

Last update: 2023-03-30 23:53 UTC

Orbital Properties

Epoch

60000.0

MJD

Orbit type

Aten

Perihelion (q)

0.537

Aphelion (Q)

1.056

Eccentricity (e)

0.326

Inclination (i)

5.4

deg

Orbit period (P)

259.6

Earth MOID

0.03992

U parameter

1.5

Next Earth close approach

Date

2023-04-06

Nominal distance (from Earth center)

0.04145

6200306

Maximum Brightness

120.1

mag

Risk

Object is not in risk list

Object is in priority list

Physical Properties

Absolute Magnitude (H)

24.3

mag

Diameter

50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-03-16

Observatory

Mt. Lemmon Survey

Orbit Visualiser

Click the button to start Orbit Visualiser

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion
Aphelion
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

60000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.796467

1-sigma variation

1.155E-8

Unit

Eccentricity (e)

Value

0.325643

1-sigma variation

0.000001

Unit

Inclination (i)

Value

5.4443

1-sigma variation

2.234E-5

Unit

Ascending Node (Ω)

Value

171.8692

1-sigma variation

3.762E-5

Unit

Arg. of Perihelion (ω)

Value

179.2180

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

169.94828

1-sigma variation

0.00027

Unit

Perihelion

Value

0.537104

1-sigma variation

Unit

Aphelion

Value

1.055831

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.062147

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.469701

1-sigma variation

Unit

MOID

Value

0.039920

1-sigma variation

Unit

Orbit Period

Value

259.6274

1-sigma variation

Unit

U parameter

Value

1.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.33398E-16	-6.37891E-15	-1.26051E-13	2.88424E-13	5.86130E-13	-2.10491E-12
e	-6.37891E-15	3.77431E-13	1.44577E-12	-1.97895E-11	-5.05122E-11	1.52661E-10
i	-1.26051E-13	1.44577E-12	4.99156E-10	2.30254E-10	7.71095E-10	-1.34179E-9
Ω	2.88424E-13	-1.97895E-11	2.30254E-10	1.41505E-9	2.85169E-9	-8.88110E-9
ω	5.86130E-13	-5.05122E-11	7.71095E-10	2.85169E-9	9.96569E-9	-2.56375E-8
M	-2.10491E-12	1.52661E-10	-1.34179E-9	-8.88110E-9	-2.56375E-8	7.10390E-8

Date of computation: 2023-03-29 11:58 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

24.273

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

Unit

Source

[-]

Diameter

Value

50*

Unit

Source

[3]

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 ODIM	ESA orbit determination and impact monitoring system
[2]	NEODyS	NEO Dynamic Site: https://newton.spacedys.com/neodys2
[3]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved

Arc Information

Value

Unit

Source

Arc Length

Value

1838

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Astrometry Summary

RMS of Residuals
First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

RMS of Residuals

Value

0.598006

Unit

arcsec

Source

[1]

First Observation

Value

2018-03-16.22244

Unit

Source

[2]

Last Observation

Value

2023-03-28.510255

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

101 (1)

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

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	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

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 2018FD from 1950 to 2123

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1954-02-09 19:52	< 1 min	0.0567900	0.0567885	0.0000005
EARTH	1959-03-06 14:46	< 1 min	0.0624542	0.0624527	0.0000005
EARTH	1964-04-02 19:13	< 1 min	0.0391522	0.0391512	0.0000003
EARTH	1969-04-10 07:18	< 1 min	0.1140984	0.1140935	0.0000016
EARTH	1981-02-07 00:44	< 1 min	0.1098910	0.1098885	0.0000008
EARTH	1986-02-17 23:21	< 1 min	0.0499506	0.0499498	0.0000003
EARTH	1991-03-22 22:13	< 1 min	0.0551203	0.0551178	0.0000008
EARTH	1996-04-08 21:15	< 1 min	0.0631943	0.0631895	0.0000016
EARTH	2001-04-09 05:26	< 1 min	0.1964907	0.1964844	0.0000021
EARTH	2008-02-08 02:43	< 1 min	0.1547253	0.1547223	0.0000010
EARTH	2013-02-11 08:10	< 1 min	0.0486751	0.0486743	0.0000003
EARTH	2018-03-10 08:08	< 1 min	0.0625624	0.0625609	0.0000005
EARTH	2023-04-06 12:39	< 1 min	0.0414465	0.0414458	0.0000002
EARTH	2028-04-09 20:25	< 1 min	0.1530234	0.1530199	0.0000012
EARTH	2035-02-08 14:33	< 1 min	0.1907578	0.1907454	0.0000041
EARTH	2040-02-09 04:01	< 1 min	0.0654256	0.0654169	0.0000029
EARTH	2045-02-26 06:28	1.3	0.0581996	0.0581957	0.0000013
EARTH	2050-03-28 10:54	< 1 min	0.0487788	0.0487773	0.0000005
EARTH	2055-04-10 12:15	< 1 min	0.0826249	0.0826196	0.0000018
EARTH	2067-02-07 18:08	< 1 min	0.1446180	0.1446075	0.0000035
EARTH	2072-02-11 13:26	< 1 min	0.0483577	0.0483555	0.0000007
EARTH	2077-03-03 18:35	1.1	0.0617791	0.0617766	0.0000008
EARTH	2082-03-31 03:51	< 1 min	0.0457908	0.0457896	0.0000004
EARTH	2087-04-10 17:54	< 1 min	0.0901097	0.0901017	0.0000027
EARTH	2099-02-08 02:57	< 1 min	0.1658332	0.1658226	0.0000036
EARTH	2104-02-10 13:44	< 1 min	0.0595749	0.0595704	0.0000015
EARTH	2109-02-26 03:15	< 1 min	0.0565162	0.0565142	0.0000007
EARTH	2114-03-23 22:45	< 1 min	0.0570317	0.0570297	0.0000007
EARTH	2119-04-09 07:55	< 1 min	0.0501926	0.0501892	0.0000011

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