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2437 Amnestia (1942 RZ)
Classification: Main-belt Asteroid          SPK-ID: 2002437
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .147704005703253 1.1333e-08  
a 2.189084233980365 4.7195e-09 au
q 1.865747723799628 2.54e-08 au
i 2.944627550878674 1.4694e-06 deg
node 218.9283334324423 1.5657e-05 deg
peri 151.4813450901776 1.4255e-05 deg
M 112.9017239961463 8.8456e-06 deg
tp 2459025.486075476988
(2020-Jun-24.98607548)
2.8853e-05 TDB
period 1183.020135572449
3.24
3.8257e-06
1.047e-08
d
yr
n .304305894020815 9.8408e-10 deg/d
Q 2.512420744161102 5.4166e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2848  
   data-arc span      33473 days (91.64 yr)  
   first obs. used      1929-09-27  
   last obs. used      2021-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40479  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:38:58  

Additional Information
 Earth MOID = .8653 au 
 Jupiter MOID = 2.95738 au 
 T_jup = 3.658 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457287.5 (2015-Sep-22.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1483568425477253 1.1363e-08  
q 1.863920377379399 2.5484e-08 au
tp 2457842.919969177077
(2017-Mar-30.41996918)
2.8323e-05 TDB
node 218.9689408924953 1.5648e-05 deg
peri 151.4936635971659 1.4242e-05 deg
i 2.945543292682943 1.4701e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2848  
   data-arc span      33473 days (91.64 yr)  
   first obs. used      1929-09-27  
   last obs. used      2021-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40479  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:38:58  

Additional Information
 Jupiter MOID = 2.95738 au 
 T_jup = 3.658 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.291168400817752E-16 -2.859747730378876E-16 4.102240449510263E-14 7.745719281748437E-14 -5.780037369548261E-14 1.285716673788272E-14
q -2.859747730378876E-16 6.49448979294289E-16 -8.731464857904038E-14 -1.665555988678719E-13 1.225897541959549E-13 -2.761503884592116E-14
tp 4.102240449510263E-14 -8.731464857904038E-14 8.022091755022678E-10 1.545322643382143E-10 6.944295633936125E-11 1.426347882666797E-11
node 7.745719281748437E-14 -1.665555988678719E-13 1.545322643382143E-10 2.448475340651675E-10 -1.919449875367018E-10 1.664528970699742E-11
peri -5.780037369548261E-14 1.225897541959549E-13 6.944295633936125E-11 -1.919449875367018E-10 2.028355511419989E-10 -1.158223941212527E-11
i 1.285716673788272E-14 -2.761503884592116E-14 1.426347882666797E-11 1.664528970699742E-11 -1.158223941212527E-11 2.161325801973733E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.07   n/a E2021B10  
diameter diameter 6.742 km 0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 85. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Ruthroff, J.C. (2011) Minor Planet Bull. 38, 86-88.]
geometric albedo albedo 0.269   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2437 Amnestia (1942 RZ)          Discovered 1942-Sep-14 by Vaisala, M. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1942 RZ = 1929 SC = 1939 XE = 1955 SF1 = 1955 UO = 1965 YE = 1971 OE1 = 1977 KB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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