Asteroids

2018BF3 help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.813

Aphelion (Q)

2.290

Eccentricity (e)

0.476

Inclination (i)

11.7

deg

Orbit period (P)

705.9

Earth MOID

0.00037

U parameter

7.2

Next Earth close approach

Date

2047-01-14

Nominal distance (from Earth center)

0.05138

7686079

Maximum Brightness

23.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-01-20

Observatory

University of Arizona Catalina Sky 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

1.551472

1-sigma variation

0.000377

Unit

Eccentricity (e)

Value

0.475920

1-sigma variation

0.000153

Unit

Inclination (i)

Value

11.6974

1-sigma variation

0.0032

Unit

Long. of Ascending Node (Ω)

Value

298.8893

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

117.3592

1-sigma variation

0.0007

Unit

Mean Anomaly (M)

Value

144.23120

1-sigma variation

0.61626

Unit

Perihelion distance

Value

0.813096

1-sigma variation

Unit

Aphelion distance

Value

2.289849

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.519609

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.000724

1-sigma variation

Unit

MOID

Value

0.000366

1-sigma variation

Unit

Orbit Period

Value

705.8534

1-sigma variation

Unit

U parameter

Value

7.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.42379E-7	5.77723E-8	1.21307E-6	-2.57884E-8	2.65640E-7	-2.32535E-4
e	5.77723E-8	2.34427E-8	4.92300E-7	-1.05067E-8	1.07580E-7	-9.43546E-5
i	1.21307E-6	4.92300E-7	1.03458E-5	-2.25173E-7	2.24057E-6	-1.98119E-3
Ω	-2.57884E-8	-1.05067E-8	-2.25173E-7	8.06744E-9	-3.57732E-8	4.21135E-5
ω	2.65640E-7	1.07580E-7	2.24057E-6	-3.57732E-8	5.54477E-7	-4.33868E-4
M	-2.32535E-4	-9.43546E-5	-1.98119E-3	4.21135E-5	-4.33868E-4	3.79780E-1

Date of computation: 2026-06-04 23:11 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

26.072

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

16 - 40*

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

3076

Unit

Source

[1]

Normalized RMS of residuals

Value

0.403789

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-01-20.28005

Unit

Source

[2]

Last Observation

Value

2018-01-23.1944

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

50 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2018BF3 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	1999-09-04 08:41	> 1 w	0.1801279	0.1556944	0.0869357
EARTH	2001-09-09 17:55	> 1 w	0.1568219	0.1567000	0.0057347
EARTH	2003-09-18 13:48	> 1 w	0.1835890	0.1547915	0.0643317
EARTH	2011-12-25 13:48	> 1 w	0.1643545	0.0742530	0.0318505
EARTH	2014-01-10 01:56	> 1 d	0.0873601	0.0309820	0.0188656
EARTH	2016-01-18 17:38	601.3	0.0112907	0.0009607	0.0048208
EARTH	2018-01-19 02:59	< 1 min	0.0016234	0.0016220	0.0000005
EARTH	2047-01-14 22:51	> 1 d	0.0513783	0.0019410	0.0633442
EARTH	2074-01-31 06:35	> 1 w	0.1826285	0.0089202	0.1497603
EARTH	2077-09-04 19:57	> 1 w	0.1560036	0.1550062	0.0189604
EARTH	2103-01-18 18:58	> 1 mo	0.0243647	0.0027634	0.3705952

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
39.83083908	17.25484789	0.00018737	MINIMUM
312.52414303	242.33630195	0.15311574	MINIMUM
351.28573697	301.67844348	0.24730028	SADDLE
178.06127365	133.95558016	1.30673022	SADDLE
357.38509450	131.93413047	1.81809969	SADDLE
179.98628289	315.13102620	3.26718564	MAXIMUM

Download:

MOID Plots

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