Asteroids

2018VP1 help

Last update: 2024-04-20 09:05 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.875

Aphelion (Q)

1.943

Eccentricity (e)

0.379

Inclination (i)

3.3

deg

Orbit period (P)

610.9

Earth MOID

0.00005

U parameter

9.0

Next Earth close approach

Date

2025-11-11

Nominal distance (from Earth center)

0.10888

16287547

Maximum Brightness

28.7

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

30.8

mag

Diameter

1.9 - 4*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-11-03

Observatory

Palomar Mountain--ZTF

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

1.408988

1-sigma variation

2.047380

Unit

Eccentricity (e)

Value

0.378718

1-sigma variation

0.591400

Unit

Inclination (i)

Value

3.2637

1-sigma variation

3.3820

Unit

Long. of Ascending Node (Ω)

Value

39.7325

1-sigma variation

0.2313

Unit

Arg. of Perihelion (ω)

Value

304.8957

1-sigma variation

147.4740

Unit

Mean Anomaly (M)

Value

38.71728

1-sigma variation

1720.64000

Unit

Perihelion distance

Value

0.875379

1-sigma variation

Unit

Aphelion distance

Value

1.942597

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.000255

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.533880

1-sigma variation

Unit

MOID

Value

0.000052

1-sigma variation

Unit

Orbit Period

Value

610.8849

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.19178E0	1.21082E0	6.92431E0	4.73483E-1	3.01936E2	-3.52282E3
e	1.21082E0	3.49754E-1	2.00013E0	1.36768E-1	8.72163E1	-1.01759E3
i	6.92431E0	2.00013E0	1.14381E1	7.82136E-1	4.98763E2	-5.81927E3
Ω	4.73483E-1	1.36768E-1	7.82136E-1	5.34822E-2	3.41052E1	-3.97920E2
ω	3.01936E2	8.72163E1	4.98763E2	3.41052E1	2.17487E4	-2.53751E5
M	-3.52282E3	-1.01759E3	-5.81927E3	-3.97920E2	-2.53751E5	2.96061E6

Date of computation: 2024-02-21 14:29 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

30.751

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

1.9 - 4*

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 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

1982

Unit

Source

[1]

Normalized RMS of residuals

Value

0.699318

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-11-03.272495

Unit

Source

[2]

Last Observation

Value

2018-11-16.240265

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (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 2018VP1 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	1955-08-17 14:02	> 1 mo	0.1091835	0.0714582	1.0592155
EARTH	1968-09-28 17:57	> 1 mo	0.1079480	0.0341829	0.6672276
EARTH	1981-10-31 00:27	> 1 w	0.0149497	0.0002977	0.0682066
EARTH	1994-08-24 09:17	> 1 w	0.1164105	0.0861925	0.0148790
MARS	2004-05-05 18:51	> 1 d	0.0466367	0.0458417	0.0062924
EARTH	2007-07-07 09:35	> 1 d	0.1383174	0.0607570	0.0332354
EARTH	2018-11-02 18:19	< 1 min	0.0010096	0.0010082	0.0000005
EARTH	2020-11-01 23:55	1112.4	0.0004090	0.0000450	0.0056440
EARTH	2025-11-11 12:00	> 1 mo	0.1088755	0.0017621	69.1997101
EARTH	2072-06-23 07:35	> 1 mo	0.1675298	0.0519660	381.7238067
EARTH	2077-07-02 00:51	> 1 mo	0.0670931	0.0524509	230.8347020
EARTH	2082-07-13 10:15	> 1 mo	0.0692954	0.0524784	200.7673400
EARTH	2087-08-09 02:12	> 1 mo	0.1247692	0.0653192	130.6083086
EARTH	2092-09-07 10:20	> 1 mo	0.1398742	0.1221959	25.3560284
EARTH	2097-10-06 23:10	> 1 mo	0.1077094	0.0197363	148.7388423
EARTH	2102-10-30 19:54	> 1 mo	0.0320466	0.0017694	162.6771728
EARTH	2107-11-04 17:07	> 1 mo	0.0026010	0.0012126	237.6791458
EARTH	2119-11-04 04:17	> 1 mo	0.0029937	0.0013334	111024.3596348
EARTH	2124-11-17 17:32	> 1 mo	0.1852166	0.0037310	19740949.7220568

Download as:

2018VP1

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2020-11-02.051	59155.051	0.077	1.20 ± 0.000	1.34E2	5.86E-3	2.41E-6	n/a
2024-11-01.991	60615.991	0.048	1.34 ± 0.000	6.10E6	1.08E-7	4.45E-11	-8.18
2025-11-02.214	60981.214	0.143	1.11 ± 0.000	1.99E6	4.22E-7	1.74E-10	-7.90
2026-11-02.578	61346.578	0.056	1.22 ± 0.000	1.26E7	6.21E-8	2.55E-11	-8.91
2027-04-27.460	61522.460	0.059	0.88 ± 0.013	1.52E7	8.00E-8	3.29E-11	-8.82
2027-11-02.815	61711.815	0.100	1.53 ± 0.000	1.13E7	2.30E-8	9.45E-12	-9.46
2027-11-02.877	61711.877	0.058	0.95 ± 0.001	1.41E7	7.83E-8	3.23E-11	-8.93
2028-11-01.875	62076.875	0.059	1.15 ± 0.000	1.74E7	4.72E-8	1.94E-11	-9.24
2030-11-02.472	62807.472	0.061	0.86 ± 0.000	2.30E7	4.43E-8	1.83E-11	-9.41
2033-11-02.447	63903.447	0.057	0.33 ± 0.000	3.33E7	3.60E-8	1.48E-11	-9.65
2036-11-02.100	64999.100	0.064	1.13 ± 0.000	3.04E7	2.80E-8	1.15E-11	-9.86
2047-11-02.729	69016.729	0.058	0.79 ± 0.000	2.38E7	4.44E-8	1.82E-11	-9.92
2055-11-03.372	71939.372	0.060	0.12 ± 0.000	1.49E8	8.23E-9	3.38E-12	-10.78
2057-11-02.138	72669.138	0.061	0.19 ± 0.003	5.38E7	2.26E-8	9.31E-12	-10.37
2065-11-02.679	75591.679	0.057	0.65 ± 0.010	4.87E7	2.46E-8	1.01E-11	-10.42
2067-11-03.164	76322.164	0.056	1.14 ± 0.002	8.54E7	9.76E-9	4.01E-12	-10.85
2076-05-01.334	79424.334	0.058	0.97 ± 0.006	1.98E7	4.85E-8	2.00E-11	-10.22


Based on 21 optical observations (of which 0 are rejected as outliers) from 2018/11/03.272 to 2018/11/16.240.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.54 and 1.54 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20240110 090429.826 UTC.

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