Asteroids

297418 2000SP43 help

Last update: 2024-04-24 13:40 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Aten

Perihelion (q)

0.433

Aphelion (Q)

1.190

Eccentricity (e)

0.467

Inclination (i)

10.3

deg

Orbit period (P)

267.0

Earth MOID

0.01883

U parameter

0.1

A₂

-21.8

10^-15au/days²

Next Earth close approach

Date

2025-12-08

Nominal distance (from Earth center)

0.18646

27894404

Maximum Brightness

18.2

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

18.5

mag

Diameter

440

Taxonomic type

Rotation period (T)

6.306

Discovery Information

Discovery Date

2000-09-25

Observatory

Lincoln Laboratory ETS, New Mexico

Orbit Visualiser

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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

0.811504

1-sigma variation

2.020E-9

Unit

Eccentricity (e)

Value

0.466893

1-sigma variation

4.984E-8

Unit

Inclination (i)

Value

10.3432

1-sigma variation

5.551E-6

Unit

Long. of Ascending Node (Ω)

Value

350.5405

1-sigma variation

1.561E-5

Unit

Arg. of Perihelion (ω)

Value

224.4553

1-sigma variation

1.370E-5

Unit

Mean Anomaly (M)

Value

160.87969

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.432619

1-sigma variation

Unit

Aphelion distance

Value

1.190390

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.053762

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.517258

1-sigma variation

Unit

MOID

Value

0.018831

1-sigma variation

Unit

Orbit Period

Value

267.0144

1-sigma variation

Unit

U parameter

Value

0.1

1-sigma variation

Unit

A₂

Value

-21.76905

1-sigma variation

2.37541

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	4.07943E-18	1.99446E-18	-6.92944E-16	-5.45129E-15	3.19277E-15	-1.16069E-14	4.71548E-9
e	1.99446E-18	2.48436E-15	1.52736E-13	3.06484E-13	-1.75740E-13	-3.92926E-13	1.00452E-8
i	-6.92944E-16	1.52736E-13	3.08098E-11	6.79602E-11	-5.53936E-11	-2.96345E-11	-6.25183E-7
Ω	-5.45129E-15	3.06484E-13	6.79602E-11	2.43818E-10	-2.01771E-10	-6.79189E-11	-7.10189E-6
ω	3.19277E-15	-1.75740E-13	-5.53936E-11	-2.01771E-10	1.87778E-10	1.78821E-11	5.05668E-6
M	-1.16069E-14	-3.92926E-13	-2.96345E-11	-6.79189E-11	1.78821E-11	1.77731E-10	-1.50420E-5
A₂	4.71548E-9	1.00452E-8	-6.25183E-7	-7.10189E-6	5.05668E-6	-1.50420E-5	5.64258E0

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

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

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Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

6.314

6.306

Unit

Source

[6]

[1]

Quality

Value

Unit

Source

[6]

Amplitude

Value

1.13

0.98

Unit

mag

Source

[1]

[6]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

342

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[2]

[3]

Taxonomy (all)

Value

Sr;V

Unit

Source

[4]

[5]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.545

Unit

mag

Source

[7]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[7]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.39

0.377

Unit

Source

[8]

[9]

Diameter

Value

440

Unit

Source

[9]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.8

0.5

Unit

B-V

V-R

Source

[6]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Visual S

Radar R

Unit

Source

[4]

[10]

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Sources

No.	Name	Additional
[1]	EARN	1.) Near-Earth Asteroid Lightcurve Analysis at the Center for Solar System Studies: 2019 September-2020 January, B.D. Warner
[2]	EARN	1.) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects)
[3]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[4]	EARN	1.) Hicks, M. et al. (2011) href="http://www.astronomerstelegram.org/?read=3678"> ATel#3678 (Palomar Spectroscopy of Near-Earth Asteroids 2004 SV55, 2000 SP43, 3988 (1986 LA), 1036 Ganymed, and 2002 AG29) 2.) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects)
[5]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[6]	EARN	1.) Hergenrother, C.W. (2018) MPB 45, 237-238. (Near-Earth Asteroid (297418) 2000 SP43: Lightcurve and Color Photometry)
[7]	ESA ODIM	ESA orbit determination and impact monitoring system
[8]	EARN	1.) Nugent, C.R. et al. (2015) Astrophys. J. 814_117 (13pp) (NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos)(201 NEOs)
[9]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[10]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

8421

Unit

Source

[1]

Unobserved

Value

191

Unit

Source

[1]

Normalized RMS of residuals

Value

0.391102

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2000-09-25.10318

Unit

Source

[2]

Last Observation

Value

2023-10-16.510692

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1191 (7)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2011-10-16

Unit

Source

[3]

Last Observation

Value

2011-10-16

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

1 (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 297418 2000SP43 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	1954-09-19 07:56	< 1 min	0.0329486	0.0328750	0.0000245
EARTH	1962-09-22 15:13	1.5	0.1706524	0.1705551	0.0000324
EARTH	1968-12-08 02:40	< 1 min	0.1776544	0.1776462	0.0000027
EARTH	1973-09-20 08:22	1.8	0.0738705	0.0737853	0.0000284
EARTH	1981-09-20 16:33	< 1 min	0.1103804	0.1103017	0.0000262
EARTH	1987-12-08 21:52	< 1 min	0.1825324	0.1825176	0.0000049
EARTH	1992-09-24 04:45	1.9	0.1262349	0.1261989	0.0000120
EARTH	2000-09-19 10:09	< 1 min	0.0608774	0.0608536	0.0000079
EARTH	2006-12-08 06:40	< 1 min	0.1923968	0.1923931	0.0000012
EARTH	2011-09-26 14:10	< 1 min	0.1392407	0.1392391	0.0000005
EARTH	2019-09-20 08:55	< 1 s	0.0683333	0.0683321	0.0000004
EARTH	2025-12-08 12:32	< 1 min	0.1864626	0.1864591	0.0000012
EARTH	2030-09-24 03:21	< 1 min	0.1204965	0.1204786	0.0000060
EARTH	2038-09-20 16:02	< 1 min	0.0897016	0.0896536	0.0000160
EARTH	2044-12-08 13:18	< 1 min	0.1823374	0.1823206	0.0000056
EARTH	2049-09-23 22:53	3.3	0.1202739	0.1202087	0.0000217
VENUS	2052-07-12 15:47	1.5	0.0474699	0.0473722	0.0000326
EARTH	2057-09-20 01:13	< 1 min	0.0688555	0.0687650	0.0000302
EARTH	2063-12-08 14:55	< 1 min	0.1957308	0.1956919	0.0000130
EARTH	2068-09-28 23:02	4.6	0.1582758	0.1582243	0.0000172
EARTH	2076-09-19 03:33	< 1 min	0.0204601	0.0204560	0.0000014
EARTH	2084-09-23 04:16	2.9	0.1855749	0.1853772	0.0000659
EARTH	2090-12-09 05:12	2.3	0.1769385	0.1769037	0.0000117
EARTH	2095-09-21 14:58	7.6	0.0811484	0.0808437	0.0001016
EARTH	2103-09-22 06:13	3.9	0.0916281	0.0912748	0.0001178
EARTH	2109-12-09 14:42	2.5	0.1901712	0.1900583	0.0000377
EARTH	2114-09-29 03:01	11.6	0.1493201	0.1491685	0.0000505
EARTH	2122-09-20 23:49	< 1 min	0.0367931	0.0367587	0.0000114

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