Asteroids

7088 Ishtar help

Last update: 2025-04-02 00:05 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Amor

Perihelion (q)

1.208

Aphelion (Q)

2.754

Eccentricity (e)

0.390

Inclination (i)

8.3

deg

Orbit period (P)

1018.3

Earth MOID

0.22433

U parameter

0.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

16.8

mag

Diameter

1140

Taxonomic type

Rotation period (T)

2.679

Discovery Information

Discovery Date

1992-01-01

Observatory

Palomar Mountain

ORBIT VISUALISATION TOOLS

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.980914

1-sigma variation

2.375E-9

Unit

Eccentricity (e)

Value

0.390351

1-sigma variation

2.080E-8

Unit

Inclination (i)

Value

8.2987

1-sigma variation

2.789E-6

Unit

Long. of Ascending Node (Ω)

Value

102.6087

1-sigma variation

2.080E-5

Unit

Arg. of Perihelion (ω)

Value

354.7872

1-sigma variation

2.148E-5

Unit

Mean Anomaly (M)

Value

342.47329

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.207661

1-sigma variation

Unit

Aphelion distance

Value

2.754166

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.225410

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.730673

1-sigma variation

Unit

MOID

Value

0.224328

1-sigma variation

Unit

Orbit Period

Value

1018.3493

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.64129E-18	4.08950E-18	-7.77023E-17	3.51841E-16	7.20946E-15	-1.17199E-14
e	4.08950E-18	4.32618E-16	-8.16244E-16	-6.88637E-15	3.40500E-14	-3.20016E-14
i	-7.77023E-17	-8.16244E-16	7.77869E-12	9.90641E-12	-1.02932E-11	5.01581E-13
Ω	3.51841E-16	-6.88637E-15	9.90641E-12	4.32534E-10	-4.28785E-10	9.96717E-13
ω	7.20946E-15	3.40500E-14	-1.02932E-11	-4.28785E-10	4.61361E-10	-3.34934E-11
M	-1.17199E-14	-3.20016E-14	5.01581E-13	9.96717E-13	-3.34934E-11	3.78683E-11

Date of computation: 2025-03-28 15:40 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

2.679

Unit

Source

[5]

Quality

Value

3,B

Unit

Source

[5]

Amplitude

Value

0.33

Unit

mag

Source

[5]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Scomp

Sq/Sr

Unit

Source

[1]

[2]

[3]

Taxonomy (all)

Value

Sq/Sr

Unit

Source

[4]

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

17.08

16.849

Unit

mag

Source

[6]

[7]

Slope Parameter (G)

Value

0.15**

0.24

Unit

mag

Source

[7]

[6]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.26

0.325

Unit

Source

[9]

[8]

Diameter

Value

1140

Unit

Source

[8]

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

[-]

Satellites

Satellites

Value

Unit

Source

Satellites

Value

Binary Child 1

Unit

Source

[4]

Download this part as:

Sources

No.	Name	Additional
No.[1]	NameEARN	Additional1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
No.[2]	NameEARN	Additional1.) Michaël Marsset et al 2022 AJ 163 165
No.[3]	NameEARN	Additional1.) Ieva, S. et al. (2014) Astron. Astrophys. 569, A59. (Low Delta-V Near-Earth Asteroids: a survey of suitable targets for space missions) (taxonomy of 7088,13353,85804,142454, 145656,164222,203471,277127,2004TD10)
No.[4]	NameEARN	AdditionalEarth Asteroids Research Node: https://earn.dlr.de
No.[5]	NameEARN	Additional1.) Reddy, V. et al. (2006) CBET HREF="http://www.cbat.eps.harvard.edu/iau/cbet/000300/CBET000384.txt"> 384. (7088 ISHTAR ) (binary asteroid) 2.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods" 3.) Reddy, V. et al. (2007) LPSC 38, 1239. (Photometric observations of binary near-Earth asteroid (7088) Ishtar and (11405) 1999 CV3) 4.) Pravec, P. et al (2016) Icarus 267,267-295. (Binary asteroid population. 3. Secondary rotations and elongations) (..,..)
No.[6]	NameEARN	Additional1.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)
No.[7]	NameESA Aegis	AdditionalESA orbit determination and impact monitoring system
No.[8]	NameEARN	Additional1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
No.[9]	NameEARN	Additional1.) Masiero, J.R. et al. (2018) Astron. J. 154_168(10pp). (NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos) (170NEOs, 6110MBAs)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

15918

Unit

Source

[1]

Unobserved

Value

183

Unit

Source

[1]

Normalized RMS of residuals

Value

0.473537

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1981-03-03.75175

Unit

Source

[2]

Last Observation

Value

2024-10-01.256641

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1444 (10)

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

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
0.75635123	356.39412375	0.22432791	MINIMUM
179.77812363	175.04070543	1.73805807	SADDLE
359.70967984	174.85274705	2.22385686	SADDLE
180.00117782	355.18868438	3.73780317	MAXIMUM

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MOID Plots

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