Asteroids with Satellites Database--Johnston's Archive
(2607)
Yakutia
compiled by Wm. Robert Johnston
last updated
7 December 2025
--Orbital and physical data--
(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:
main belt asteroid
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.37681987468 AU
| |
orbital period P: |
3.6643977496 yr (= 1338.42127804 d)
| |
eccentricity e: |
0.22643560588
| |
perihelion distance q: |
1.8386232263 AU
| |
aphelion distance Q: |
2.91501652307 AU
| |
inclination i: |
2.090836699°
| |
argument of perihelion ω: |
336.5409518°
| |
ascending node Ω: |
359.7208761°
| |
mean anomaly M: |
52.18897096°
| |
perihelion passage TP: |
2025 May 10.9699188
| |
Epoch: |
2025 Nov 21
| |
data arc: |
1951-2025
(4599 obs.)
| |
Earth MOID: |
0.827973 AU
| |
Jupiter Tisserand invariant TJ: |
3.505
|
orbital data, secondary:
|
semimajor axis as: |
7.95
km
[*E]
| |
separation/primary radius as/rp: | 3.48 [*E] | |
separation/Hill radius as/rH: | 0.012 [*E] | |
orbital period Ps: |
0.7004
± 0.0004
d [B25p]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.76
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
4.7
± 0.08
km [M19a]
| |
geometric albedo: |
0.35
± 0.049
[M19a]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
color index J-H: | 0.427 ± 0.104 [S10b] | |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
660 km [*E]
|
other data, primary:
|
diameter dp: |
4.57
± 0.08
km [*D]
| |
dimensions : | ~5.1 x ~4.3 km [*E] | |
axial ratios a/b, b/c: | 1.2, ? [*E] | |
rotation period RPp: |
2.93584
± 0.0001
h [B25p]
| |
amplitude in mag., rotational ΔM: |
0.19
[B25p]
| |
amplitude in mag., mutual events ΔM: | 0.06 [B25p] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
>1.10
km [*D]
| |
diameter ratio ds/dp: |
>0.24
[B25p]
| |
component mag. difference ΔM: |
<3.1
| |
rotation period RPs: |
?
| |
|
|
--
(2607) Yakutia
--discovery and notes:
Primary discovered
1977 Jul 14
from
Nauchnyj, Crimea, Ukraine, USSR
by
N. S. Chernykh.
Alternate designation(s):
1977 NR,
1951 KK, 1966 PN.
Linked to prediscovery observations from 1951 May 25.
Permanent number assigned 1982 Apr 08.
Named 1982 Dec 01 for the Yakut Autonomous Soviet Socialist Republic, USSR [MPC007473].
Companion discovered
2025 Oct 31
by V. Benishek, P. Pravec, P. Bacci, M. Maestripieri, and N. Ruocco
using
lightcurve
observations from Sopot Observatory, Serbia; San Marcello Pistoiese Observatory, San Marcello Pistoiese, Italy; Osservatorio Astronomico Nastro Verde, Sorrento, Italy.
Announced
2025 Dec 06 [B25p].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2025
by Wm. Robert Johnston.
Last modified
7 December 2025.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.