Asteroids

2021VF11 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.032

Aphelion (Q)

1.350

Eccentricity (e)

0.134

Inclination (i)

1.6

deg

Orbit period (P)

474.7

Earth MOID

0.04569

U parameter

5.3

Next Earth close approach

Date

2034-11-27

Nominal distance (from Earth center)

0.05563

8322613

Maximum Brightness

22.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.1

mag

Diameter

10 - 22*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2021-11-11

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

1.190989

1-sigma variation

0.000014

Unit

Eccentricity (e)

Value

0.133807

1-sigma variation

0.000008

Unit

Inclination (i)

Value

1.6023

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

84.1809

1-sigma variation

0.0002

Unit

Arg. of Perihelion (ω)

Value

340.9309

1-sigma variation

0.0006

Unit

Mean Anomaly (M)

Value

23.61052

1-sigma variation

0.01940

Unit

Perihelion distance

Value

1.031627

1-sigma variation

Unit

Aphelion distance

Value

1.350351

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.053976

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.321775

1-sigma variation

Unit

MOID

Value

0.045691

1-sigma variation

Unit

Orbit Period

Value

474.7447

1-sigma variation

Unit

U parameter

Value

5.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.98912E-10	1.13015E-10	1.24893E-9	2.58356E-9	-7.63571E-9	-2.73650E-7
e	1.13015E-10	6.42139E-11	7.09696E-10	1.46496E-9	-4.33176E-9	-1.55481E-7
i	1.24893E-9	7.09696E-10	7.85650E-9	1.58697E-8	-4.73319E-8	-1.71839E-6
Ω	2.58356E-9	1.46496E-9	1.58697E-8	4.41212E-8	-1.15657E-7	-3.54984E-6
ω	-7.63571E-9	-4.33176E-9	-4.73319E-8	-1.15657E-7	3.23745E-7	1.04940E-5
M	-2.73650E-7	-1.55481E-7	-1.71839E-6	-3.54984E-6	1.04940E-5	3.76473E-4

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

27.114

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

10 - 22*

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

1382

Unit

Source

[1]

Normalized RMS of residuals

Value

0.59175

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2021-10-05.509994

Unit

Source

[2]

Last Observation

Value

2021-12-13.296602

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

30 (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 2021VF11 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	1952-09-05 03:45	> 1 d	0.1727164	0.1687842	0.0013120
EARTH	1965-11-22 02:11	112.5	0.0595885	0.0577708	0.0006109
EARTH	1978-11-21 12:13	31.3	0.0870231	0.0857133	0.0004370
EARTH	2008-12-29 17:44	> 1 d	0.1197162	0.1162786	0.0011547
EARTH	2021-11-25 16:03	< 1 min	0.0475858	0.0475769	0.0000030
EARTH	2034-11-27 11:29	228.5	0.0556332	0.0531061	0.0008515
EARTH	2048-02-17 05:00	> 1 w	0.1916796	0.1844471	0.0024115
EARTH	2056-08-27 06:50	> 1 w	0.1956139	0.1865881	0.0030159
EARTH	2069-11-24 16:07	906.2	0.0574348	0.0462574	0.0040588
EARTH	2082-11-26 08:18	> 1 d	0.0494032	0.0407120	0.0045026
EARTH	2095-09-22 22:18	> 1 mo	0.1544221	0.0307828	0.0415923
EARTH	2113-02-13 12:42	> 1 mo	0.1834943	0.0597246	0.0426349
EARTH	2125-11-30 14:39	> 1 d	0.0595817	0.0283359	0.0374322

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
358.32736907	321.51397253	0.04569249	MINIMUM
176.24898696	139.13244733	0.33792068	SADDLE
355.40538224	138.22698932	2.04421039	SADDLE
176.76023786	319.59475246	2.33750514	MAXIMUM

Download:

MOID Plots

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