Asteroids

3551 Verenia help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.074

Aphelion (Q)

3.112

Eccentricity (e)

0.487

Inclination (i)

9.5

deg

Orbit period (P)

1105.9

Earth MOID

0.07487

U parameter

0.2

Next Earth close approach

Date

2101-09-08

Nominal distance (from Earth center)

0.13892

20781416

Maximum Brightness

14.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

16.7

mag

Diameter

870

Taxonomic type

Rotation period (T)

4.930

Discovery Information

Discovery Date

1983-09-12

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

2.092884

1-sigma variation

1.028E-8

Unit

Eccentricity (e)

Value

0.486784

1-sigma variation

6.754E-8

Unit

Inclination (i)

Value

9.5068

1-sigma variation

4.462E-6

Unit

Long. of Ascending Node (Ω)

Value

173.7689

1-sigma variation

2.809E-5

Unit

Arg. of Perihelion (ω)

Value

193.3124

1-sigma variation

3.362E-5

Unit

Mean Anomaly (M)

Value

38.40043

1-sigma variation

0.00004

Unit

Perihelion distance

Value

1.074102

1-sigma variation

Unit

Aphelion distance

Value

3.111666

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

2.040397

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.077818

1-sigma variation

Unit

MOID

Value

0.074875

1-sigma variation

Unit

Orbit Period

Value

1105.9007

1-sigma variation

Unit

U parameter

Value

0.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.05717E-16	-4.88048E-16	1.55839E-14	1.24042E-14	1.89239E-13	-4.52813E-13
e	-4.88048E-16	4.56224E-15	-6.75861E-14	-4.63622E-14	-7.68198E-13	2.14840E-12
i	1.55839E-14	-6.75861E-14	1.99097E-11	6.95816E-11	-3.80749E-11	-6.77186E-11
Ω	1.24042E-14	-4.63622E-14	6.95816E-11	7.89069E-10	-7.56512E-10	-4.83004E-11
ω	1.89239E-13	-7.68198E-13	-3.80749E-11	-7.56512E-10	1.13007E-9	-8.25156E-10
M	-4.52813E-13	2.14840E-12	-6.77186E-11	-4.83004E-11	-8.25156E-10	1.96079E-9

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

4.930

Unit

Source

[4]

Quality

Value

Unit

Source

[4]

Amplitude

Value

0.11-0.15

Unit

mag

Source

[4]

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

[1]

[2]

Taxonomy (all)

Value

Unit

Source

[1]

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

16.707

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.28

Unit

Source

[7]

Diameter

Value

870

Unit

Source

[6]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.39

0.13

Unit

U-B

B-V

Source

[1]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

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Sources

No.	Name	Additional
[1]	EARN	1.) Cruikshank, D.P. et al. (1991) Icarus 89, 1-13. (Three basaltic earth-approaching asteroids and the source of the basaltic meteorites)
[2]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	EARN	1.) Harris, A.W. & J.W. Young (1985) B.A.A.S. 17, 726. (Photometric Results for Earth Approaching Asteroids.) (1627,1036,1862,1982RA,1982XB,1983RD,1984KD) 2.) Binzel, R.P. (1987) Icarus 72, 135-208. (A photoelectric survey of 130 asteroids) 3.) Wisniewski, W.Z. (1987) Icarus 70, 566-572. (Photometry of six radar target asteroids)1986 DA, 3199, 3103, and 1983 RD. 1986 JK and 1986 RA 4.) Harris, A.W. (DLR) (1998) Icarus 131, 291-301. (A Thermal Model for Near-Earth Asteroids)
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	EARN	1.) Harris, A.W. (DLR) & J.S.V Lagerros (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 205-218. (Asteroids in the thermal infrared) 2.) Veeder, G.J. et al. (1989) Astron. J. 97, 1211-1219. (Radiometry of near-earth asteroids) 3.) Cruikshank, D.P. et al. (1991) Icarus 89, 1-13. (Three basaltic earth-approaching asteroids and the source of the basaltic meteorites)
[7]	EARN	1.) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs) 2.) Harris, A.W. (DLR) & J.S.V Lagerros (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 205-218. (Asteroids in the thermal infrared) 3.) Veeder, G.J. et al. (1989) Astron. J. 97, 1211-1219. (Radiometry of near-earth asteroids)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

15268

Unit

Source

[1]

Unobserved

Value

475

Unit

Source

[1]

Normalized RMS of residuals

Value

0.584815

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1983-09-07.30347

Unit

Source

[2]

Last Observation

Value

2025-06-26.685625

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

680 (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

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Max residual (arcsec):

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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.

Close Approaches for 3551 Verenia from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1983-09-16 22:03	< 1 min	0.0852583	0.0852578	0.0000002
EARTH	1986-10-04 10:37	< 1 min	0.1178961	0.1178953	0.0000003
EARTH	2101-09-08 19:14	< 1 min	0.1389152	0.1389020	0.0000044
EARTH	2104-09-21 13:33	1.0	0.0690345	0.0690331	0.0000005
EARTH	2107-10-09 00:15	1.2	0.1253340	0.1253184	0.0000052

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
355.13123565	255.18879246	0.07487475	MINIMUM
358.70218551	81.19455801	2.07146627	SADDLE
179.75655828	82.05424184	2.11491396	SADDLE
179.31174891	261.79487019	4.11345350	MAXIMUM

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MOID Plots

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