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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1476379396431674 1.1346e-08  
a 2.188846459576356 4.7096e-09 au
q 1.865689678089262 2.5421e-08 au
i 2.944777092443539 1.471e-06 deg
node 218.9372080844147 1.5663e-05 deg
peri 151.4337318278066 1.4259e-05 deg
M 53.30008937980165 8.8173e-06 deg
tp 2459025.375539309217
(2020-Jun-24.87553931)
2.8875e-05 TDB
period 1182.827394517898
3.24
3.8175e-06
1.045e-08
d
yr
n .3043554804940329 9.8229e-10 deg/d
Q 2.512003241063451 5.4049e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2811  
   data-arc span      33406 days (91.46 yr)  
   first obs. used      1929-09-27  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40283  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:47:27  

Additional Information
 Earth MOID = .864542 au 
 Jupiter MOID = 2.95704 au 
 T_jup = 3.658 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457271.5 (2015-Sep-06.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1483278598778388 1.1379e-08  
q 1.864031839252537 2.5528e-08 au
tp 2457842.933244436666
(2017-Mar-30.43324444)
2.8338e-05 TDB
node 218.9697430272159 1.5655e-05 deg
peri 151.4905691209812 1.4249e-05 deg
i 2.945442118183758 1.4716e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2811  
   data-arc span      33406 days (91.46 yr)  
   first obs. used      1929-09-27  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40283  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:47:27  

Additional Information
 Jupiter MOID = 2.95704 au 
 T_jup = 3.658 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.294778006396081E-16 -2.868745605324151E-16 4.091834482071174E-14 7.772017657168421E-14 -5.805112324292088E-14 1.289460052917757E-14
q -2.868745605324151E-16 6.516930917466225E-16 -8.706122014855E-14 -1.672087007198862E-13 1.232101631768298E-13 -2.770751888675331E-14
tp 4.091834482071174E-14 -8.706122014855E-14 8.030417476439603E-10 1.545908345124256E-10 6.959736819975058E-11 1.426642374580467E-11
node 7.772017657168421E-14 -1.672087007198862E-13 1.545908345124256E-10 2.450742006409802E-10 -1.921270457664417E-10 1.667544314508255E-11
peri -5.805112324292088E-14 1.232101631768298E-13 6.959736819975058E-11 -1.921270457664417E-10 2.030318526928976E-10 -1.160752488387402E-11
i 1.289460052917757E-14 -2.770751888675331E-14 1.426642374580467E-11 1.667544314508255E-11 -1.160752488387402E-11 2.165545250438069E-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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