Asteroids

455176 1999VF22 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.343

Aphelion (Q)

2.282

Eccentricity (e)

0.739

Inclination (i)

3.9

deg

Orbit period (P)

549.4

Earth MOID

0.03426

U parameter

0.0

A₂

-48.1

10^-15au/days²

Next Earth close approach

Date

2028-02-26

Nominal distance (from Earth center)

0.11405

17062085

Maximum Brightness

18.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.8

mag

Diameter

190 - 400*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

1999-11-10

Observatory

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.312716

1-sigma variation

1.942E-9

Unit

Eccentricity (e)

Value

0.738696

1-sigma variation

5.636E-8

Unit

Inclination (i)

Value

3.9184

1-sigma variation

4.316E-6

Unit

Long. of Ascending Node (Ω)

Value

3.1684

1-sigma variation

3.766E-5

Unit

Arg. of Perihelion (ω)

Value

272.0541

1-sigma variation

3.584E-5

Unit

Mean Anomaly (M)

Value

145.62092

1-sigma variation

1.154E-6

Unit

Perihelion distance

Value

0.343018

1-sigma variation

Unit

Aphelion distance

Value

2.282415

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.422061

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.385406

1-sigma variation

Unit

MOID

Value

0.034264

1-sigma variation

Unit

Orbit Period

Value

549.3572

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

-48.06256

1-sigma variation

4.49774

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	3.77262E-18	1.00545E-16	-9.92954E-16	8.41122E-15	4.56331E-15	1.03630E-15	8.46269E-9
e	1.00545E-16	3.17612E-15	-7.20737E-14	6.56721E-13	-2.45041E-13	4.86386E-14	2.45022E-7
i	-9.92954E-16	-7.20737E-14	1.86307E-11	-1.62160E-10	1.51828E-10	-1.01915E-12	-4.95326E-6
Ω	8.41122E-15	6.56721E-13	-1.62160E-10	1.41832E-9	-1.32481E-9	1.09033E-11	4.47319E-5
ω	4.56331E-15	-2.45041E-13	1.51828E-10	-1.32481E-9	1.28474E-9	-4.63458E-12	-1.29984E-5
M	1.03630E-15	4.86386E-14	-1.01915E-12	1.09033E-11	-4.63458E-12	1.33250E-12	3.21834E-6
A₂	8.46269E-9	2.45022E-7	-4.95326E-6	4.47319E-5	-1.29984E-5	3.21834E-6	2.02297E1

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

20.759

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

190 - 400*

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

9238

Unit

Source

[1]

Unobserved

Value

235

Unit

Source

[1]

Normalized RMS of residuals

Value

0.514995

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1999-11-10.14233

Unit

Source

[2]

Last Observation

Value

2025-02-23.77596

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

527 (8)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2019-02-19

Unit

Source

[3]

Last Observation

Value

2022-02-22

Unit

Source

[3]

Delay (Discarded)

Value

5 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (0)

Unit

Source

[1]

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
[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 455176 1999VF22 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
MERCURY	1952-12-29 13:29	< 1 min	0.0443684	0.0443568	0.0000038
VENUS	1954-06-15 10:08	< 1 min	0.0461435	0.0461346	0.0000030
MERCURY	1959-01-07 13:26	< 1 min	0.0325720	0.0325650	0.0000023
MERCURY	1965-01-15 18:17	< 1 min	0.0272875	0.0272870	0.0000002
MERCURY	1971-01-25 11:15	< 1 min	0.0377750	0.0377692	0.0000019
EARTH	1990-10-24 13:25	< 1 min	0.1803284	0.1803268	0.0000006
EARTH	1993-10-26 13:16	< 1 min	0.1176205	0.1176194	0.0000004
EARTH	1996-10-28 16:24	< 1 min	0.0629049	0.0629043	0.0000002
EARTH	1999-10-31 13:51	< 1 min	0.0376880	0.0376878	0.0000001
EARTH	2002-11-02 16:40	< 1 s	0.0700118	0.0700115	0.0000001
EARTH	2005-11-04 18:44	< 1 s	0.1208089	0.1208083	0.0000002
EARTH	2008-11-07 02:25	< 1 s	0.1770933	0.1770925	0.0000002
EARTH	2013-02-15 14:40	< 1 s	0.1453792	0.1453790	0.0000000
EARTH	2016-02-18 17:34	< 1 s	0.0942402	0.0942401	0.0000000
EARTH	2019-02-20 15:56	< 1 s	0.0491750	0.0491749	0.0000000
MERCURY	2019-03-27 20:46	< 1 s	0.0336062	0.0336061	0.0000000
EARTH	2022-02-22 07:53	< 1 s	0.0358702	0.0358702	0.0000000
EARTH	2025-02-24 00:27	< 1 s	0.0699625	0.0699624	0.0000000
VENUS	2025-03-15 05:43	< 1 s	0.0444859	0.0444858	0.0000000
MERCURY	2025-04-01 16:34	< 1 s	0.0387972	0.0387971	0.0000000
EARTH	2028-02-26 15:44	< 1 s	0.1140530	0.1140528	0.0000001
EARTH	2031-02-28 08:32	< 1 s	0.1675817	0.1675813	0.0000001
VENUS	2038-09-29 04:53	< 1 min	0.0439955	0.0439946	0.0000003
MERCURY	2049-05-02 10:32	< 1 min	0.0421952	0.0421921	0.0000010
MERCURY	2055-05-12 06:30	< 1 min	0.0280436	0.0280434	0.0000001
MERCURY	2061-05-21 21:07	< 1 min	0.0478668	0.0478610	0.0000019
VENUS	2082-06-04 05:32	< 1 min	0.0481909	0.0481784	0.0000042
MERCURY	2115-09-02 12:14	1.2	0.0409621	0.0409390	0.0000077
MERCURY	2121-09-10 18:26	< 1 min	0.0333549	0.0333463	0.0000028
EARTH	2124-10-26 12:33	< 1 min	0.1678905	0.1678657	0.0000083

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
289.61844234	49.90200871	0.03431996	MINIMUM
70.56890966	296.33548597	0.03861066	MINIMUM
0.27642451	173.37519350	0.67455187	SADDLE
180.03787532	353.04486813	1.30244609	SADDLE
0.27473302	353.38134880	1.32600982	SADDLE
180.04873403	173.05065821	3.29670546	MAXIMUM

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MOID Plots

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