Asteroids

2009VT1

Last update: 2023-10-02 13:05 UTC

Orbital Properties

Epoch

60200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.985

Aphelion (Q)

2.984

Eccentricity (e)

0.504

Inclination (i)

0.3

deg

Orbit period (P)

1021.2

Earth MOID

0.00073

U parameter

8.0

Next Earth close approach

Date

2023-10-04

Nominal distance (from Earth center)

0.01962

2934786

Maximum Brightness

22.6

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

29.6

mag

Diameter

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2009-11-10

Observatory

Mt. Lemmon Survey

Orbit Visualiser

Click the button to start Orbit Visualiser

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion
Aphelion
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

60200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.984563

1-sigma variation

0.002011

Unit

Eccentricity (e)

Value

0.503523

1-sigma variation

0.000485

Unit

Inclination (i)

Value

0.2696

1-sigma variation

0.0002

Unit

Ascending Node (Ω)

Value

216.8393

1-sigma variation

0.1630

Unit

Arg. of Perihelion (ω)

Value

178.5802

1-sigma variation

0.1503

Unit

Mean Anomaly (M)

Value

345.44514

1-sigma variation

2.46216

Unit

Perihelion

Value

0.985291

1-sigma variation

Unit

Aphelion

Value

2.983835

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.974622

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.007881

1-sigma variation

Unit

MOID

Value

0.000728

1-sigma variation

Unit

Orbit Period

Value

1021.1647

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.04275E-6	9.74321E-7	3.79492E-7	-3.27690E-4	3.02004E-4	-4.95056E-3
e	9.74321E-7	2.34817E-7	9.15388E-8	-7.89709E-5	7.27793E-5	-1.19311E-3
i	3.79492E-7	9.15388E-8	4.52714E-8	-3.03195E-5	2.78075E-5	-4.64677E-4
Ω	-3.27690E-4	-7.89709E-5	-3.03195E-5	2.65814E-2	-2.45042E-2	4.01275E-1
ω	3.02004E-4	7.27793E-5	2.78075E-5	-2.45042E-2	2.25917E-2	-3.69821E-1
M	-4.95056E-3	-1.19311E-3	-4.64677E-4	4.01275E-1	-3.69821E-1	6.06222E0

Date of computation: 2023-08-01 23:50 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

29.55

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

Unit

Source

[-]

Diameter

Value

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

[-]

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Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

5073

Unit

Source

[1]

Astrometry Summary

RMS of Residuals
First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

RMS of Residuals

Value

0.500458

Unit

arcsec

Source

[1]

First Observation

Value

2009-11-10.31746

Unit

Source

[2]

Last Observation

Value

2009-11-11.49584

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

26 (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

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	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 2009VT1 from 1950 to 2123

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1998-12-07 11:16	> 1 w	0.1609749	0.0019664	0.0936498
EARTH	2009-11-09 13:15	< 1 min	0.0035931	0.0035829	0.0000034
EARTH	2023-10-04 05:27	> 1 w	0.0196178	0.0015927	0.0771857
EARTH	2048-11-25 08:48	> 1 mo	0.0517690	0.0013095	1.7189486
EARTH	2062-09-11 23:49	> 1 mo	0.1787754	0.0027059	3.5604222
EARTH	2087-12-05 21:09	> 1 mo	0.1202955	0.0019353	10.7927056
EARTH	2101-09-30 23:21	> 1 mo	0.0380249	0.0018249	3.9706144

Download as:

2009VT1

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2064-10-10.011	75203.011	0.956	0.000	0.52 ± 0.037	1.21E7	7.49E-8	1.54E-10	-9.38
2081-10-11.033	81413.033	-0.273	0.000	0.93 ± 0.038	4.74E6	2.90E-7	5.91E-10	-8.95
2081-10-11.039	81413.039	-1.631	0.000	0.54 ± 0.047	1.63E6	2.34E-7	4.74E-10	-9.04
2091-10-18.387	85072.387	0.456	0.000	0.42 ± 0.253	2.96E7	4.48E-8	9.14E-11	-9.82
2094-10-13.809	86163.809	1.075	0.000	0.92 ± 0.000	6.80E7	1.18E-8	2.43E-11	-10.42
2102-10-12.881	89083.881	0.957	0.000	0.88 ± 0.036	2.97E7	2.90E-8	5.93E-11	-10.07
2103-10-17.718	89453.718	1.054	0.000	0.56 ± 0.043	2.90E7	2.85E-8	5.82E-11	-10.09
2105-10-12.831	90179.831	0.956	0.221	1.89 ± 0.036	8.29E6	7.19E-9	1.47E-11	-10.70
2107-10-19.115	90916.115	-2.947	0.000	1.48 ± 0.022	2.97E7	4.10E-10	8.23E-13	-11.96
2109-10-12.630	91640.630	3.469	0.000	1.84 ± 0.038	3.38E5	2.06E-9	4.28E-12	-11.25
2117-10-13.610	94563.610	-1.329	0.000	1.73 ± 0.022	6.40E7	4.03E-9	8.19E-12	-11.01
2118-10-17.709	94932.709	1.042	0.000	0.57 ± 0.000	5.94E7	1.45E-8	3.00E-11	-10.45
2119-10-22.546	95302.546	-1.343	0.000	0.55 ± 0.039	2.03E6	3.03E-7	6.08E-10	-9.14


Based on 26 optical observations (of which 0 are rejected as outliers) from 2009/11/10.317 to 2009/11/11.496.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.87 and 1.88 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
Aegis software version= 4.0, Date of computation=20220721 081641.366 UTC.

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