Asteroids

2017VL2 help

Last update: 2024-05-01 23:55 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.962

Aphelion (Q)

1.568

Eccentricity (e)

0.240

Inclination (i)

12.5

deg

Orbit period (P)

519.8

Earth MOID

0.00160

U parameter

7.0

Next Earth close approach

Date

2044-11-24

Nominal distance (from Earth center)

0.18905

28281025

Maximum Brightness

25.2

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

17 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-11-10

Observatory

ATLAS-MLO, Mauna Loa

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)
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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.265138

1-sigma variation

0.000199

Unit

Eccentricity (e)

Value

0.239728

1-sigma variation

0.000131

Unit

Inclination (i)

Value

12.4993

1-sigma variation

0.0049

Unit

Long. of Ascending Node (Ω)

Value

226.9295

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

147.7117

1-sigma variation

0.0003

Unit

Mean Anomaly (M)

Value

195.97960

1-sigma variation

0.38796

Unit

Perihelion distance

Value

0.961849

1-sigma variation

Unit

Aphelion distance

Value

1.568427

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.486199

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001831

1-sigma variation

Unit

MOID

Value

0.001597

1-sigma variation

Unit

Orbit Period

Value

519.7630

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.96359E-8	2.60210E-8	9.81244E-7	7.38810E-9	5.42559E-8	-7.72389E-5
e	2.60210E-8	1.70829E-8	6.44196E-7	4.87153E-9	3.55566E-8	-5.07074E-5
i	9.81244E-7	6.44196E-7	2.42930E-5	1.84506E-7	1.33831E-6	-1.91216E-3
Ω	7.38810E-9	4.87153E-9	1.84506E-7	5.62879E-9	-1.26929E-9	-1.43939E-5
ω	5.42559E-8	3.55566E-8	1.33831E-6	-1.26929E-9	1.08156E-7	-1.05740E-4
M	-7.72389E-5	-5.07074E-5	-1.91216E-3	-1.43939E-5	-1.05740E-4	1.50516E-1

Date of computation: 2024-04-23 10:08 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

25.98

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

17 - 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

[-]

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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
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

2349

Unit

Source

[1]

Normalized RMS of residuals

Value

0.296648

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-11-10.47521

Unit

Source

[2]

Last Observation

Value

2017-11-26.3458

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

54 (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 2017VL2 from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1961-11-12 08:18	> 1 d	0.0343135	0.0005066	0.0141026
EARTH	1987-09-19 06:59	> 1 d	0.1991905	0.1798005	0.0068193
EARTH	2002-11-01 21:05	> 1 d	0.0650364	0.0054375	0.0235508
EARTH	2017-11-09 09:48	< 1 min	0.0007875	0.0007864	0.0000004
EARTH	2044-11-24 03:58	> 1 d	0.1890470	0.0799661	0.0365816
EARTH	2054-11-02 12:12	> 1 d	0.0571312	0.0048794	0.0395592
EARTH	2081-11-02 00:17	> 1 w	0.0590358	0.0057724	0.0865855
EARTH	2098-11-21 19:13	> 1 d	0.1427582	0.0635572	0.0265330

Download as:

2017VL2

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2087-11-09.919	83633.919	1.622	0.74 ± 0.001	1.49E5	2.21E-6	6.09E-7	-6.39
2097-11-09.444	87286.444	1.662	1.26 ± 0.001	5.07E4	4.34E-6	1.20E-6	-6.16
2098-11-09.665	87651.665	0.937	0.37 ± 0.001	3.77E5	2.23E-6	6.13E-7	-6.45
2098-11-09.675	87651.675	-2.478	0.97 ± 0.009	5.54E3	9.52E-6	2.62E-6	-5.82
2098-11-09.684	87651.684	0.666	1.52 ± 0.001	8.62E3	5.14E-5	1.42E-5	-5.09
2100-11-10.158	88382.158	1.944	0.51 ± 0.000	1.61E6	1.19E-7	3.29E-8	-7.74
2101-11-10.432	88747.432	-4.619	0.58 ± 0.009	2.57E3	1.19E-8	3.25E-9	-8.75
2101-11-10.436	88747.436	-4.568	0.43 ± 0.004	5.39E3	7.06E-9	1.94E-9	-8.97
2101-11-10.451	88747.451	3.155	0.41 ± 0.004	2.69E3	3.32E-6	9.15E-7	-6.30
2105-11-10.362	90208.362	0.971	0.23 ± 0.000	1.54E8	5.37E-9	1.48E-9	-9.11
2107-11-10.945	90938.945	1.889	1.25 ± 0.005	5.93E4	2.87E-6	7.93E-7	-6.39
2111-11-10.912	92399.912	2.101	1.32 ± 0.011	1.98E5	6.59E-7	1.82E-7	-7.05
2112-11-10.176	92765.176	-2.929	0.36 ± 0.000	6.17E5	2.90E-8	7.98E-9	-8.41
2113-11-10.419	93130.419	1.550	1.07 ± 0.002	1.17E5	2.73E-6	7.52E-7	-6.44
2113-11-10.423	93130.423	1.430	0.70 ± 0.000	3.84E6	1.15E-7	3.18E-8	-7.82
2113-11-10.430	93130.430	1.553	1.47 ± 0.009	9.11E4	3.50E-6	9.65E-7	-6.33
2115-11-10.950	93860.950	0.747	0.59 ± 0.002	2.67E4	3.58E-5	9.87E-6	-5.33
2120-11-10.177	95687.177	1.262	0.59 ± 0.007	3.08E5	1.84E-6	5.05E-7	-6.65
2120-11-10.178	95687.178	1.251	1.30 ± 0.000	2.97E5	1.37E-6	3.77E-7	-6.77
2120-11-10.190	95687.190	1.254	1.14 ± 0.002	7.61E4	5.87E-6	1.62E-6	-6.14
2121-11-10.426	96052.426	1.402	0.69 ± 0.000	3.75E6	1.25E-7	3.45E-8	-7.82


Based on 54 optical observations (of which 0 are rejected as outliers) from 2017/11/10.475 to 2017/11/26.346.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.67 and 1.67 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20240110 090432.359 UTC.

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