Asteroids

2018FU1 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.902

Aphelion (Q)

1.180

Eccentricity (e)

0.134

Inclination (i)

6.9

deg

Orbit period (P)

387.9

Earth MOID

0.00062

U parameter

3.2

Next Earth close approach

Date

2035-03-27

Nominal distance (from Earth center)

0.04911

7346403

Maximum Brightness

22.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.8

mag

Diameter

11 - 25*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-03-18

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.040959

1-sigma variation

4.625E-7

Unit

Eccentricity (e)

Value

0.133664

1-sigma variation

0.000001

Unit

Inclination (i)

Value

6.9454

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

176.3990

1-sigma variation

1.512E-5

Unit

Arg. of Perihelion (ω)

Value

97.8458

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

1.57964

1-sigma variation

0.00166

Unit

Perihelion distance

Value

0.901820

1-sigma variation

Unit

Aphelion distance

Value

1.180098

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.045236

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.000980

1-sigma variation

Unit

MOID

Value

0.000624

1-sigma variation

Unit

Orbit Period

Value

387.9261

1-sigma variation

Unit

U parameter

Value

3.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.13919E-13	6.58087E-13	2.53996E-11	5.97773E-12	3.28624E-11	-7.68281E-10
e	6.58087E-13	2.02574E-12	7.81262E-11	1.84226E-11	1.01341E-10	-2.36347E-9
i	2.53996E-11	7.81262E-11	3.05220E-9	7.28835E-10	3.90356E-9	-9.12404E-8
Ω	5.97773E-12	1.84226E-11	7.28835E-10	2.28646E-10	8.53698E-10	-2.14569E-8
ω	3.28624E-11	1.01341E-10	3.90356E-9	8.53698E-10	5.25344E-9	-1.18098E-7
M	-7.68281E-10	-2.36347E-9	-9.12404E-8	-2.14569E-8	-1.18098E-7	2.75931E-6

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

26.844

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

11 - 25*

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

296

Unit

Source

[1]

Unobserved

Value

2445

Unit

Source

[1]

Normalized RMS of residuals

Value

0.556056

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-03-18.47342

Unit

Source

[2]

Last Observation

Value

2019-01-08.092012

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

32 (4)

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 2018FU1 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	1954-03-08 18:14	24.7	0.1378829	0.1377863	0.0000322
EARTH	1954-05-18 20:30	49.8	0.1488550	0.1487909	0.0000214
EARTH	1955-09-26 07:30	2.2	0.1468825	0.1467569	0.0000419
EARTH	1969-03-27 18:08	1.1	0.0786180	0.0785191	0.0000330
EARTH	1970-09-13 00:18	5.4	0.0733682	0.0732685	0.0000332
EARTH	1985-03-28 01:56	< 1 min	0.0519016	0.0518624	0.0000130
EARTH	1986-09-14 03:52	1.0	0.0662556	0.0662402	0.0000051
EARTH	2002-03-15 12:34	24.5	0.1185783	0.1184356	0.0000476
EARTH	2003-09-24 05:09	3.7	0.0883580	0.0881634	0.0000649
EARTH	2018-03-28 15:20	< 1 min	0.0314418	0.0314411	0.0000002
EARTH	2019-09-16 12:21	< 1 min	0.0470893	0.0470880	0.0000004
EARTH	2035-03-27 19:49	2.0	0.0491077	0.0489341	0.0000579
EARTH	2036-09-01 19:17	23.1	0.1058056	0.1056528	0.0000509
EARTH	2053-03-26 05:01	8.4	0.0638115	0.0635742	0.0000792
EARTH	2054-09-19 09:59	8.8	0.0068002	0.0064979	0.0001008
EARTH	2075-03-22 14:51	> 1 d	0.0786842	0.0199436	0.0235221
EARTH	2076-09-08 12:00	> 1 d	0.0977116	0.0314205	0.0226071
EARTH	2077-09-28 03:29	1042.6	0.1938922	0.1322398	0.0205519
EARTH	2097-03-23 08:29	663.7	0.0229341	0.0172832	0.0217445
EARTH	2098-08-06 15:09	> 1 mo	0.1393874	0.0650921	0.0315232
EARTH	2098-10-03 06:10	> 1 w	0.1490191	0.0486268	0.0480194
EARTH	2099-09-26 06:32	> 1 d	0.1561367	0.0052337	0.0630815
EARTH	2118-03-22 01:14	> 1 d	0.0821971	0.0170072	0.1991254
EARTH	2119-02-05 08:09	> 1 mo	0.1869500	0.1139810	0.0878067
EARTH	2119-06-19 13:07	> 1 mo	0.1671023	0.1513797	0.0058824
EARTH	2120-09-21 22:30	> 1 w	0.0483127	0.0004181	0.1696586

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
74.64394882	255.08514864	0.00006812	MINIMUM
280.42414628	83.78687375	0.02850806	MINIMUM
357.09402476	168.49857128	0.16226297	SADDLE
177.80432540	350.25763990	0.23513131	SADDLE
0.51804595	352.52055248	1.88227691	SADDLE
181.15653522	173.17226981	2.19232381	MAXIMUM

Download:

MOID Plots

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