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1494 Savo (1938 SJ)
Classification: Main-belt Asteroid          SPK-ID: 2001494
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1309512862274556 1.8251e-08  
a 2.19036468966033 4.0016e-09 au
q 1.903533616242108 4.0738e-08 au
i 2.455498017881783 4.268e-07 deg
node 194.9883569555385 1.9475e-05 deg
peri 184.7259920986671 1.7684e-05 deg
M 118.7139187575861 5.9602e-06 deg
tp 2458810.043900119351
(2019-Nov-22.54390012)
1.9237e-05 TDB
period 1184.058258948269
3.24
3.2448e-06
8.884e-09
d
yr
n .3040390937518287 8.3318e-10 deg/d
Q 2.477195763078551 4.5256e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3125  
   data-arc span      30120 days (82.46 yr)  
   first obs. used      1938-09-27  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40442  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:32:01  

Additional Information
 Earth MOID = .904351 au 
 Jupiter MOID = 2.97698 au 
 T_jup = 3.661 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.35   n/a E2021B10  
diameter diameter 7.804 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.35011 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2006) http://www.asu.cas.cz/~ppravec/neo.htm]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Dykhuis, M.J.; Molnar, L.A.; Gates, C.J.; Gonzales, J.A.; et al. (2016) Icarus 267, 174-203.]
geometric albedo albedo 0.349   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Sa   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1494 Savo (1938 SJ)          Discovered 1938-Sep-16 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1938 SJ = 1925 RL = 1938 SG1 = 1948 VR = 1951 SV = 1953 GD = 1966 HB = 1976 HZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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