Asteroids

7088 Ishtar help

Last update: 2026-07-30 09:40 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.208

Aphelion (Q)

2.754

Eccentricity (e)

0.390

Inclination (i)

8.3

deg

Orbit period (P)

1018.4

Earth MOID

0.22470

U parameter

0.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.981031

1-sigma variation

2.399E-9

Unit

Eccentricity (e)

Value

0.390241

1-sigma variation

2.054E-8

Unit

Inclination (i)

Value

8.2987

1-sigma variation

2.729E-6

Unit

Long. of Ascending Node (Ω)

Value

102.6088

1-sigma variation

2.002E-5

Unit

Arg. of Perihelion (ω)

Value

354.7913

1-sigma variation

2.065E-5

Unit

Mean Anomaly (M)

Value

123.87461

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.207952

1-sigma variation

Unit

Aphelion distance

Value

2.754110

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.225835

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.730059

1-sigma variation

Unit

MOID

Value

0.224703

1-sigma variation

Unit

Orbit Period

Value

1018.4397

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.75622E-18	4.49507E-18	-8.30488E-17	3.07955E-16	7.30567E-15	-1.24653E-14
e	4.49507E-18	4.21980E-16	-6.33311E-16	-5.69695E-15	2.68845E-14	-2.86741E-14
i	-8.30488E-17	-6.33311E-16	7.44699E-12	6.72908E-12	-7.09505E-12	4.72994E-13
Ω	3.07955E-16	-5.69695E-15	6.72908E-12	4.00820E-10	-3.97201E-10	8.01622E-13
ω	7.30567E-15	2.68845E-14	-7.09505E-12	-3.97201E-10	4.26502E-10	-3.19213E-11
M	-1.24653E-14	-2.86741E-14	4.72994E-13	8.01622E-13	-3.19213E-11	3.90618E-11

Date of computation: 2026-07-30 09:40 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

16.846

17.08

Unit

mag

Source

[6]

[7]

Slope Parameter (G)

Value

0.15**

0.24

Unit

Source

[6]

[7]

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
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[3]	EARN	1.) 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)
[4]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[5]	EARN	1.) 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) (..,..)
[6]	ESA Aegis	ESA orbit determination and impact monitoring system
[7]	EARN	1.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)
[8]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[9]	EARN	1.) 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

16545

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.473027

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

2026-06-20.381405

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1465 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

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Computation parameters

As seen from:

Initial Date: *

Final Date: *

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Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
0.70215050	354.17849655	0.22470284	MINIMUM
179.74417710	172.83890580	1.73753311	SADDLE
359.63003633	172.60121420	2.22461431	SADDLE
179.96978782	352.98908135	3.73767686	MAXIMUM

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MOID Plots

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