Asteroids

2018TP5 help

Last update: 2024-04-25 08:10 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

0.888

Aphelion (Q)

2.477

Eccentricity (e)

0.472

Inclination (i)

2.7

deg

Orbit period (P)

797.2

Earth MOID

0.00129

U parameter

5.7

Next Earth close approach

Date

2029-06-11

Nominal distance (from Earth center)

0.08093

12107568

Maximum Brightness

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.7

mag

Diameter

19 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2018-10-10

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)
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

1.682610

1-sigma variation

0.000060

Unit

Eccentricity (e)

Value

0.472309

1-sigma variation

0.000022

Unit

Inclination (i)

Value

2.7387

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

11.2946

1-sigma variation

4.504E-5

Unit

Arg. of Perihelion (ω)

Value

308.9896

1-sigma variation

0.0003

Unit

Mean Anomaly (M)

Value

203.12246

1-sigma variation

0.04938

Unit

Perihelion distance

Value

0.887897

1-sigma variation

Unit

Aphelion distance

Value

2.477322

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.008117

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.861184

1-sigma variation

Unit

MOID

Value

0.001291

1-sigma variation

Unit

Orbit Period

Value

797.2115

1-sigma variation

Unit

U parameter

Value

5.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.65040E-9	1.30479E-9	5.74519E-9	9.97442E-10	-1.51086E-8	-2.98345E-6
e	1.30479E-9	4.66391E-10	2.05361E-9	3.56848E-10	-5.40273E-9	-1.06640E-6
i	5.74519E-9	2.05361E-9	9.07444E-9	1.72231E-9	-2.39684E-8	-4.69550E-6
Ω	9.97442E-10	3.56848E-10	1.72231E-9	2.02820E-9	-5.62771E-9	-8.15374E-7
ω	-1.51086E-8	-5.40273E-9	-2.39684E-8	-5.62771E-9	6.47976E-8	1.23480E-5
M	-2.98345E-6	-1.06640E-6	-4.69550E-6	-8.15374E-7	1.23480E-5	2.43836E-3

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

25.748

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

19 - 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

[-]

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

1970

Unit

Source

[1]

Normalized RMS of residuals

Value

0.521439

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2018-10-05.39294

Unit

Source

[2]

Last Observation

Value

2018-12-03.050513

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

47 (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 2018TP5 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	1950-10-02 22:17	> 1 d	0.0025390	0.0021698	0.0062196
EARTH	1961-08-30 11:12	> 1 d	0.1150428	0.0977774	0.0057766
EARTH	1972-07-14 13:44	> 1 d	0.1095023	0.0917298	0.0061246
EARTH	1983-06-15 18:24	1343.7	0.0556777	0.0470602	0.0047854
EARTH	2018-10-01 05:13	< 1 min	0.0155071	0.0155052	0.0000006
EARTH	2029-06-11 23:38	433.7	0.0809341	0.0725796	0.0028739
EARTH	2042-10-02 22:49	1034.4	0.0052177	0.0008562	0.0053313
EARTH	2055-06-07 02:51	> 1 mo	0.1299108	0.0478322	1.0265523
EARTH	2070-07-15 02:07	> 1 mo	0.1122203	0.0564340	0.7319623
EARTH	2085-09-19 20:24	> 1 mo	0.0741845	0.0037863	1.2799264
EARTH	2100-10-14 22:23	> 1 d	0.1119779	0.0016588	0.0585200
EARTH	2113-06-12 00:10	> 1 mo	0.0869299	0.0482796	1.2663517

Download as:

2018TP5

Date in UTC	MJD	σ	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2074-10-04.084	78849.084	0.925	1.24 ± 0.003	2.14E6	3.45E-7	1.72E-7	-6.89
2085-10-03.832	82866.832	0.210	0.72 ± 0.000	3.48E6	2.78E-7	1.39E-7	-7.07
2085-10-03.907	82866.907	0.944	1.05 ± 0.001	1.45E6	3.86E-7	1.92E-7	-6.93
2085-10-03.929	82866.929	1.050	0.46 ± 0.000	8.68E5	7.58E-7	3.78E-7	-6.63
2086-10-04.280	83232.280	0.747	1.38 ± 0.001	2.86E5	2.13E-6	1.06E-6	-6.19
2088-10-03.643	83962.643	4.270	0.44 ± 0.001	7.78E3	1.54E-8	7.67E-9	-8.35
2089-10-03.826	84327.826	0.929	0.31 ± 0.000	1.50E6	4.91E-7	2.44E-7	-6.85
2089-10-03.827	84327.827	1.020	0.84 ± 0.003	1.34E6	4.15E-7	2.06E-7	-6.92
2091-10-04.511	85058.511	1.610	0.25 ± 0.003	1.48E5	2.10E-6	1.05E-6	-6.23
2093-10-03.979	85788.979	1.914	0.80 ± 0.001	8.67E5	1.76E-7	8.80E-8	-7.32
2094-10-04.138	86154.138	1.050	0.23 ± 0.000	3.71E7	1.76E-8	8.74E-9	-8.33
2095-10-04.329	86519.329	0.540	1.03 ± 0.001	7.66E5	1.29E-6	6.42E-7	-6.47
2095-10-04.417	86519.417	2.134	1.42 ± 0.001	1.72E5	8.41E-8	4.19E-8	-7.65
2099-10-04.490	87980.490	0.492	1.06 ± 0.022	1.89E7	3.62E-8	1.80E-8	-8.04
2099-10-04.526	87980.526	2.807	0.74 ± 0.001	1.48E5	1.31E-7	6.53E-8	-7.48
2100-10-04.625	88345.625	0.079	0.71 ± 0.001	1.87E5	5.32E-6	2.64E-6	-5.88
2101-10-04.963	88710.963	-1.127	0.66 ± 0.000	1.37E6	3.95E-7	1.97E-7	-7.02
2106-10-05.163	90537.163	0.394	0.29 ± 0.000	1.73E8	6.12E-9	3.05E-9	-8.85
2106-10-05.250	90537.250	1.195	1.40 ± 0.032	3.07E7	3.52E-9	1.75E-9	-9.09
2113-10-05.014	93094.014	-0.015	0.02 ± 0.000	2.19E9	5.23E-10	2.60E-10	-9.96


Based on 47 optical observations (of which 0 are rejected as outliers) from 2018/10/05.393 to 2018/12/03.051.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.43 and 1.43 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20240110 090433.193 UTC.

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