Asteroids

2018VX1 help

Last update: 2025-06-12 11:40 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.943

Aphelion (Q)

1.789

Eccentricity (e)

0.310

Inclination (i)

2.8

deg

Orbit period (P)

583.2

Earth MOID

0.00271

U parameter

5.8

Next Earth close approach

Date

2026-10-27

Nominal distance (from Earth center)

0.09235

13815911

Maximum Brightness

25.1

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.6

mag

Diameter

8 - 18*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-11-04

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.366125

1-sigma variation

0.000037

Unit

Eccentricity (e)

Value

0.309580

1-sigma variation

0.000020

Unit

Inclination (i)

Value

2.7881

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

45.0094

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

40.2993

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

1.79047

1-sigma variation

0.05814

Unit

Perihelion distance

Value

0.943200

1-sigma variation

Unit

Aphelion distance

Value

1.789050

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.008456

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.607978

1-sigma variation

Unit

MOID

Value

0.002711

1-sigma variation

Unit

Orbit Period

Value

583.2223

1-sigma variation

Unit

U parameter

Value

5.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.34695E-9	7.35650E-10	9.42659E-9	4.46516E-9	-7.31976E-9	-2.13391E-6
e	7.35650E-10	4.01784E-10	5.14844E-9	2.43871E-9	-3.99704E-9	-1.16545E-6
i	9.42659E-9	5.14844E-9	6.60041E-8	3.12611E-8	-5.12309E-8	-1.49341E-5
Ω	4.46516E-9	2.43871E-9	3.12611E-8	1.48136E-8	-2.42667E-8	-7.07395E-6
ω	-7.31976E-9	-3.99704E-9	-5.12309E-8	-2.42667E-8	4.01351E-8	1.15962E-5
M	-2.13391E-6	-1.16545E-6	-1.49341E-5	-7.07395E-6	1.15962E-5	3.38065E-3

Date of computation: 2025-06-12 11:40 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

27.641

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

8 - 18*

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

2427

Unit

Source

[1]

Normalized RMS of residuals

Value

0.609846

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-11-04.24519

Unit

Source

[2]

Last Observation

Value

2018-11-11.038938

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

97 (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

Close Approaches for 2018VX1 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	1959-11-11 17:46	287.6	0.0024723	0.0022218	0.0003493
MARS	1963-08-09 14:58	14.9	0.0028862	0.0026316	0.0000969
EARTH	1967-10-25 22:17	107.4	0.1124918	0.1096560	0.0009453
EARTH	2003-01-28 21:28	588.5	0.0812937	0.0744581	0.0023830
EARTH	2010-12-21 05:56	1371.7	0.0539003	0.0533679	0.0001908
EARTH	2018-11-10 18:19	< 1 s	0.0025494	0.0025489	0.0000002
EARTH	2026-10-27 21:18	252.7	0.0923537	0.0863958	0.0019860
MARS	2036-12-17 07:12	9.7	0.0077071	0.0027074	0.0017562
EARTH	2078-02-05 04:30	> 1 d	0.1180084	0.0491635	0.0297079
EARTH	2086-01-30 03:01	> 1 d	0.0707809	0.0471068	0.0140355
MARS	2092-01-23 19:41	96.4	0.0215533	0.0214697	0.0000281
EARTH	2094-02-01 17:33	709.0	0.0869135	0.0761158	0.0037100
EARTH	2102-02-10 00:45	> 1 d	0.1594754	0.0876969	0.0250309

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
332.44964546	306.51098039	0.00271067	MINIMUM
23.23407233	14.43399996	0.04592521	MINIMUM
4.76782341	349.77739483	0.05211721	SADDLE
179.78670263	162.72979617	0.77464010	SADDLE
359.15980270	162.19391201	1.95851374	SADDLE
179.45121234	342.48905186	2.77310066	MAXIMUM

Download:

MOID Plots

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